A00

Anderssen's Opening

1.a3

A00

Polish Gambit, Anderssen's Opening

1.a3 a5 2.b4

A00

Creepy Crawly Formation

1.a3 e5 2.h3 d5

A00

Andersspike

1.a3 g6 2.g4

A00

Ware; Meadow Hay; Crab

1.a4

A00

Wing Gambit, Ware Opening

1.a4 b5

A00

Cologne Gambit, Ware Opening

1.a4 b6 2.d4 d5 2.Nc3 Nd7

A00

Ware Gambit

1.a4 e5 2.a5 d5 3.e3 f5 4.a6

A00

Polish; Orangutan; Sokolsky; Hunt

1.b4

A00

Birmingham Gambit, Polish

1.b4 c5

A00

Outflank Variation, Polish

1.b4 c6  

A00

Schuhler Gambit, Polish

1.b4 c6 2.Bb2 a5 3.b5 cxb5 4.e4

A00

Myers Variation, Polish

1.b4 d5 2.Bb2 c6 3.a4

A00

Bugayev Attack, Polish

1.b4 e5 2.a3

A00

Wolferts Gambit, Polish

1.b4 e5 2.Bb2 c5

A00

Schiffler-Sokolsky; Tartakower Gambit

1.b4 e5 2.Bb2 f6 3.e4 Bxb4

A00

Brinckmann Variation, Polish

1.b4 e5 2.Bb2 f6 3.e4 Bxb4 4.Bc4 Nc6 5.f4 Qe7 6.f5 g6

A00

Bucker Defense, Polish

1.b4 Na6

A00

Grigorian Variation, Polish

1.b4 Nc6

A00

Polish Spike

1.b4 Nf6 2.Bb2 g6 3.g4

A00

Karniewski; Tubingen Variation, Polish

1.b4 Nh6

A00

Saragossa; Hempel's Opening

1.c3

A00

Hanham; Hayward

1.c3 e5 2.Qc2

A00

Mieses; Valencia; Venezuelan Opening

1.d3 

A00

Venezolana

1.d3 c5 2.Nc3 Nc6 3.g3

A00

Reversed Rat

1.d3 e5

A00

Spike Deferred; Myers Spike Attack

1.d3 g6 2.g4

A00

Keoni-Hiva Gambit

1.e3 d5 2.Nc3 Nf6 3.a3 e5 4.f4 exf4 5.Nf3

A00

Van't Kruijs Opening

1.e3 e5

A00

Bouncing Bishop Variation

1.e3 e5 2.Bc4 b5 3.Bb3

A00

Amsterdam Attack

1.e3 e5 2.c4 d6 3.Nc3 Nc6 4.b3 Nf6

A00

Ekolu Variation

1.e3 e5 2.Nc3 d5 3.f4 exf4 4.Nf3

A00

Alua Variation

1.e3 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3

A00

Akahi Variation

1.e3 e5 2.Nc3 Nf6 3.f4 exf4 4.Nf3

A00

Barnes; Gedult-Gunderam; Walkerling

1.f3 

A00

King's Head Opening

1.f3 e5 2.e4

A00

Hammerschlag; Pork Chop Opening

1.f3 e5 2.Kf2

A00

Benko; Barczay; Bilek; Hungarian

1.g3 

A00

Gambit 59

1.g3 d5 2.Bg2 e5 3.b4

A00

Regan Variation

1.g3 d5 2.Bg2 e5 3.d4

A00

Reversed Alekhine

1.g3 e5 2.Nf3

A00

Lasker Simul Special

1.g3 h5

A00

Grob; Ahlhausen; Colibri; Fric; Genoa; Spike

1.g4

A00

Grob Gambit

1.g4 d5 2.Bg2 Bxg4

A00

Romford Counter-Gambit, Grob

1.g4 d5 2.Bg2 Bxg4 3.c4 d4

A00

Spike, Grob

1.g4 d5 2.Bg2 c6 3.g5

A00

Short Spike, Grob

1.g4 d5 2.Bg2 c6 3.h3

A00

Zilbermints Gambit, Grob

1.g4 d5 2.e4

A00

Keene Defense, Grob

1.g4 d5 2.h3 e5

A00

Hurst Attack, Grob

1.g4 e5 2.Bg2 d5 3.c4

A00

Alessi Gambit, Grob

1.g4 f5

A00

Double Grob

1.g4 g5

A00

Spike Deferred

1.g4 g6 2.d3

A00

Bucker Defense, Grob

1.g4 Nh6

A00

Clemenz Opening

1.h3

A00

Kadas Opening

1.h4

A00

Despres Opening

1.h4

A00

Koola-Koola

1.h4 a5

A00

Wulumulu

1.h4 e5 2.d4

A00

Durkin's Opening; Sodium Attack

1.Na3

A00

Dunst; Heinrichsen; Will Bull; Kotrc

1.Nc3

A00

St. George Defense, Dunst

1.Nc3 a6

A00

Novosibirsk Variation, Dunst

1.Nc3 c5 2.d4 cxd4 3.Qxd4 Nc6 4.Qh4

A00

Twyble Attack, Dunst

1.Nc3 c5 2.Rb1

A00

Dunst Gambit

1.Nc3 d5 2.e4 dxe4 3.d3

A00

Pseudo-Diemer Gambit, Dunst

1.Nc3 d5 2.e4 dxe4 3.f3 exf3 4.Qxf3

A00

Amazon, Dunst

1.Nc3 d5 2.e4 dxe4 3.Nxe4 Qd5

A00

Reversed Nimzovich

1.Nc3 e5  

A00

Battambang, Dunst

1.Nc3 e5 2.a3

A00

Irish Attack; Polish Attack

1.Nc3 e5 2.f4

A00

Napoleon Attack, Dunst

1.Nc3 e5 2.Nf3

A00

Glasscoe Gambit, Dunst

1.Nc3 f5 2.g4

A00

Anti-Pirc Variation, Dunst

1.Nc3 g6 2.h4

A00

Tubingen Gambit, Dunst

1.Nc3 Nf6 2.g4

A00

Amar; Paris Opening

1.Nh3

A00

Drunken Knight Opening

1.Nh3

A00

Krazy Kat

1.Nh3 e5 2.f3 d5 3.Nf2

A01

Larsen; Queen's Fianchetto; Nimzo-Larsen Attack A01

1.b3

A01

Symmetrical Variation, Larsen

1.b3 b6

A01

English Variation, Larsen

1.b3 c5

A01

Classical Variation, Larsen

1.b3 d5

A01

Modern Variation, Larsen

1.b3 e5

A01

Ringelbach Gambit, Larsen

1.b3 e5 2.Bb2 f5 3.e4

A01

Paschmann Gambit, Larsen

1.b3 e5 2.Bb2 Nc6 3.f4

A01

Dutch Variation, Larsen

1.b3 f5

A01

Indian Variation, Larsen

1.b3 Nf6  

A01

Spike Variation, Larsen

1.b3 Nf6 2.Bb2 g6 3.g4

A02

 Bird's Opening; Dutch Attack

1.f4

A02

From's Gambit, Bird

1.f4 e5

A02

Canard Formation; Double Duck

1.f4 f5 2.d4 d5

A02

Pawn Thrust Attack, Bird

1.f4 f5 2.d4 d5

A02

Swiss Gambit, Bird

1.f4 f5 2.e4 fxe4 3.Nc3 Nf6 4.g4

A02

Hobbs Gambit, Bird

1.f4 g5

A02

Batavo Polish Attack, Bird

1.f4 Nf6 2.Nf3 g6 3.b4

A03

A03

1.f4 d5

A03

Sturm; Mujannah

1.f4 d5 2.c4

A03

Prokofiev Gambit, Bird

1.f4 d5 2.e4 dxe4 3.d3

A03

Williams Gambit, Bird

1.f4 d5 2.e4 dxe4 3.Nc3

A03

Horsefly Defense, Bird

1.f4 Nh6

A04

Reti; Zukertort; A04

1.Nf3 

A04

Wade Defense

1.Nf3 d6

A04

Lisitsin Gambit; Polish Gambit

1.Nf3 f5 2.e4 

A04

Rydel-Bloodgood Gambit

1.Nf3 f5 2.e4 exf4 3.Ne5

A04

Polish G; Dalesio G; Pirc-Lisitsin G

1.Nf3 f5 2.e4 fxe4 3.Ng5

A04

Herrstrom Gambit, Reti

1.Nf3 g5

A04

Oberndorfer Gambit; Reti

1.Nf3 g5

A04

Lessing Defense

1.Nf3 Nc6

A05

King's Indian Attack; Reti; Zukertort; A05

1.Nf3 Nf6

A06

A06

1.Nf3 d5

A06

Nimzovich Opening, Reti

1.Nf3 d5 2.b3

A06

Bloodgood Gambit, Reti

1.Nf3 d5 2.b3 c5 3.e4 dxe4 4.Ne5

A06

Santasiere's Folly, Reti

1.Nf3 d5 2.b4

A06

Old Indian Attack

1.Nf3 d5 2.d3

A06

Tennison G; Lemberg G; Abonyi G

1.Nf3 d5 2.e4

A06

Reversed Mexican Defense, Reti

1.Nf3 d5 2.Nc3

A06

Ampel Variation, Reti

1.Nf3 d5 2.Rg1

A06

Improved Lisitsin G, Reti

1.Nf3 f5 2.d3

A07

Barcza Opening, Reti; A07

1.Nf3 d5 2.g3

A08

A08

1.Nf3 d5 2.g3 c5

A09

Reti; Landstrasser G; Wolf G; A09

1.Nf3 d5 2.c4 

A09

London V; New York V, Reti

1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.Bg2 e6 5.Bb2 Nbd7

A09

Benoni Reversed; Wing Blumenfeld

1.Nf3 d5 2.c4 d4 

A09

Reti Polonaise

1.Nf3 d5 2.c4 d4 3.b4

A09

Penguin Variation, Reti

1.Nf3 d5 2.c4 d4 3.Rg1

A09

Reti Gambit Accepted

1.Nf3 d5 2.c4 dxc4

A09

Neo-Catalan, Reti

1.Nf3 d5 2.c4 e6 3.g3

A10

English Opening; A10

1.c4

A10

Halibut Gambit, English

1.c4 b5

A10

Anglo Scandanavian Defense, English

1.c4 d5

A10

Loehn Gambit, English

1.c4 d5 2.cxd5 e6

A10

Schulz Gambit, English

1.c4 d5 2.cxd5 Nf6

A10

Malvinas Variation, English

1.c4 d5 2.cxd5 Qxd5 3.Nc3 Qa5

A10

Anglo-Dutch Defense

1.c4 f5

A10

Anglo-Polish Dutch

1.c4 f5 2.b4

A10

Hickmann Gambit, English

1.c4 f5 2.e4

A10

Hickmann Gambit, English

1.c4 f5 2.e4 fxe4 3.d3

A10

Porcupine Variation, English

1.c4 f5 2.e4 fxe4 3.Nc3 Nf6 4.g4

A10

Wade Gambit, English

1.c4 f5 2.g4

A10

English Spike

1.c4 f5 2.g4

A10

Chabanon Gambit, English

1.c4 f5 2.Nf3 d6 3.e4

A10

Myers Defense, English

1.c4 g5 2.d4 Bg7

A10

Zilbermints Gambit, English

1.c4 g5 2.d4 e5

A10

Great Snake, English

1.c4 g6 

A10

Adorjan System, English

1.c4 g6 2.e4 e5

A10

Beefeater

1.c4 g6 2.Nc3 Bg7 3.d4 c5 4.d5 Bxc3 5.bxc3 f5

A10

Anglo-Lithuanian Variation, English

1.c4 Nc6

A11

Anglo-Slav, English; A11

1.c4 c6

A12

A12

1.c4 c6 2.Nf3 d5 3.b3

A12

Bled Variation, English

1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 g6

A13

Agincourt; Kurajica Defense, English; A13

1.c4 e6

A13

English Defense

1.c4 e6 2.d4 b6

A13

King's Knight Variation, English

1.c4 e6 2.Nf3 d5

A13

Wimpy System, English

1.c4 e6 2.Nf3 d5 3.b3 Nf6 4.Bb2 c5 e3

A13

Afincourt Variation, English

1.c4 e6 2.Nf3 d5 3.g3

A13

Kurajica Defense, English

1.c4 e6 2.Nf3 d5 3.g3 c6

A13

Neo Catalan, English

1.c4 e6 2.Nf3 d5 3.g3 Nf6

A13

Neo Catalan Accepted, English

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4

A13

Romanishin Gambit, English

1.c4 e6 2.Nf3 Nf6 3.g3 a6 4.Bg2 b5

A14

A14

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7

A14

Neo Catalan Declined, English

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O

A14

Keres Defense, English

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O c5 6.cxd5 Nxd5 7.Nc3 Nc6

A15

Anglo System, English; A15

1.c4 Nf6

A15

Mikenas-Carls Variation, English

1.c4 Nf6

A15

English Orangutan

1.c4 Nf6 2.b4

A15

Shirazi Shove

1.c4 Nf6 2.g3 h5

A15

King's Knight Variation, English

1.c4 Nf6 2.Nf3

A15

Romanishin Variation, English

1.c4 Nf6 2.Nf3 e6 3.g3 a6

A16

A16

1.c4 Nf6 2.Nc3

A16

Golombek Defense, English; Anti English

1.c4 Nf6 2.Nc3 d5

A16

Czech Variation, English

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nb6

A16

Korchnoi's Variation, English

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3 Bg7 6.Bg2 e5

A16

Stein Attack, English

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.Qa4+

A16

Anti-anti-grunfeld

1.c4 Nf6 2.Nc3 g6 3.Nf3 Bg7 4.e4

A17

Smyslov Defense, English

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3

A17

Hegehog System, Anglo-Indian English; A17

1.c4 Nf6 2.Nc3 e6

A17

Nimzo-English Opening

1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4

A17

Zviagintsev-Krasenkov Attack, English

1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 4.g4

A18

Flohr-Mikenas-Carls Variation, English; A18

1.c4 Nf6 2.Nc3 e6 3.e4

A18

Kevitz Defense, English

1.c4 Nf6 2.Nc3 e6 3.e4 Nc6

A18

Queen's Indian Formation, English

1.c4 Nf6 2.Nc3 e6 3.Nf3 b6

A19

Floh-Mikenas-Carls Variation, English; A19

1.c4 Nf6 2.Nc3 e6 3.e4 c5

A19

Nei Gambit, English

1.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8

A20

King's English; A20

1.c4 e5 

A20

Kahiko-Hula Gambit, English

1.c4 e5 2.e3 Nf6 4.f4 exf4 4.Nf3

A20

Double Whammy, English

1.c4 e5 2.f4

A20

Drill Variation, English

1.c4 e5 2.g3 h5

A20

Nimzovich Variation, English

1.c4 e5 2.Nf3

A20

Nimzovich-Flohr Variation, English

1.c4 e5 2.Nf3 e4

A20

English Queen

1.c4 e5 2.Qa4

A21

Reversed Sicilian, English; A21

1.c4 e5 2.Nc3

A21

Kramnik-Shirov Variation, English

1.c4 e5 2.Nc3 Bb4

A21

Troger Variation, English

1.c4 e5 2.Nc3 d6 3.g3 Be6 4.Bg2 Nc6

A21

Keres Defense, English

1.c4 e5 2.Nc3 d6 3.g3 c6

A21

General Variation, King's English

1.c4 e5 2.Nc3 d6 3.Nf3

A21

Smyslov Variation, English

1.c4 e5 2.Nc3 d6 3.Nf3 Bg4

A21

Anglo-Dutch

1.c4 e5 2.Nc3 f5

A22

Two Knights Variation, English; A22

1.c4 e5 2.Nc3 Nf6

A22

Mazedonisch Variation, English

1.c4 e5 2.Nc3 Nf6 3.f4

A22

Bremen; Carls Variation, English

1.c4 e5 2.Nc3 Nf6 3.g3

A22

Kapengut; Smyslov; Modern V, English

1.c4 e5 2.Nc3 Nf6 3.g3 Bb4

A22

Bellon Gambit, English

1.c4 e5 2.Nc3 Nf6 3.Nf3 e4 4.Ng5 b5

A22

Erbenheimer Gambit, English

1.c4 e5 2.Nc3 Nf6 3.Nf3 e4 4.Ng5 Ng4

A23

Keres Variation, English; A23

1.c4 e5 2.Nc3 Nf6 3.g3 c6

A23

Reversed Dragon, English

1.c4 e5 2.Nc3 Nf6 3.g3 d5

A24

Fianchetto Lines, Two Knights Variation, English; A24

1.c4 e5 2.Nc3 Nf6 3.g3 g6

A24

Prickly Pawn Pass System, English

1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 O-O 7.Nge2 c6 8.O-O a6

A25

Reversed Closed Sicilian, English; A25

1.c4 e5 2.Nc3 Nc6

A25

Troger Variation, English

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Be6

A25

Taimanov Variation, English

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7

A25

Hungarian Attack, English

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 4.Rb1

A25

Closed System, Full Symmetry, King's English

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6

A25

Botvinnik System, King's English

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4

A25

Bremen-Hort Variation, English

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6

A25

Botvinnik Variation, English

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4

A26

Closed System, King's English; A26

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3

A27

Three Knights System, English; A27

1.c4 e5 2.Nc3 Nc6 3.Nf3

A28

Four Knights Variation, English; A28

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6

A28

Korchnoi Line, English

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.a3

A28

Flexible Line, English

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d3

A28

Bradley Beach Variation, English

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 e4

A28

Four Knights Variation, English 

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4Bb4 6.Bg5 h6 7.Bh4 Bxc3+ 8.bxc3 Ne5

A28

Quiet Line, English

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3

A28

Romanishin Variation, English

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 Bxc3

A28

Keene; Stean Variation, English

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 O-O 6.Nd5 Re8 7.Qf5

A28

Botvinnik Line, English

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e4

A29

Fianchetto Line, Four Knights English; A29

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3

A30

Symmetrical Defense, English; A30

1.c4 c5 

A30

Wing Variation, English

1.c4 c5 2.b4

A30

Napolitano Gambit, Symmetrical English

1.c4 c5 2.Nf3 Nf6 3.b4

A30

Hedgehog Variation, Symmetrical English

1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7

A30

Double Fianchetto Defense, English

1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6

A31

Anti-Benoni Variation, Symmetrical English; A31

1.c4 c5 2.Nf3 Nf6 3.d4

A31

Two Knights Variation, English

1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4

A32

Spielmann Defense, Symmetrical English; A32

1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6

A33

A33

1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6

A33

Geller Variation, Symmetrical English

1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6

A34

Normal Variation, Symmetrical English; A34

1.c4 c5 2.Nc3

A34

Fianchetto Variation, Symmetrical English 

1.c4 c5 2.Nc3 Nf6 3.g3

A34

Rubinstein Variation, Symmetrical English

1.c4 c5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nc7

A34

Asymmetrical Variation, English

1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5

A34

Keres-Parma System, English

1.c4 c5 2.Nc3 Nf6 3.Nf3 e6 4.g3 Nc6

A34

Four Knights Variation, Symmetrical English

1.c4 c5 2.Nc3 Nf6 3.Nf3 Nf6

A35

Two Knights Variation, Symmetrical English; A35

1.c4 c5 2.Nc3 Nc6  

A36

Fianchetto Variation, Symmetrical English; A36

1.c4 c5 2.Nc3 Nc6 3.g3

A36

Symmetrical Variation, Symmetrical English

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7

A36

Botvinnik System Reversed, Symmetrical English

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e5

A36

Botvinnik Variation, Symmetrical English

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4

A37

Two Knights Line, Symmetrical English; A37

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3

A38

Full Symmetry Line, Symmetrical English; A38

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6

A38

Double Fianchetto, Symmetrical English

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.b3

A38

Duchamp Variation, Symmetrical English

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3

A39

Mecking Variation, Symmetrical English; A39

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4

A40

Hartlaub Gambit, English

1.c4 b6 2.d4 Bb7 3.Nc3 e6 4.e4 f5 5.exf5 Nf6

A40

Queen Pawn Opening; A40

1.d4

A40

St George's Gambit

1.d4 a6 2.c4 b5 3.e4 e6 4.cxb5 axb5

A40

Polish Defense

1.d4 b5 

A40

Spassky Gambit, Polish Defense

1.d4 b5 2.e4 Bb7 3.Bxb5

A40

Queen Fianchetto, Queen Pawn Game

1.d4 b6

A40

Eastbourne Gambit

1.d4 b6 2.c4 Bb7 3.Bxb5

A40

Charlick Gambit; Englund Gambit

1.d4 e5

A40

Englund Gambit Declined

1.d4 e5 2.d5

A40

Diemer Counterattack

1.d4 e5 2.d5 Bc5 3.e4 Qh4

A40

Thuring Gambit; Hartlaub-Charlick Gambit

1.d4 e5 2.dxe5 d6

A40

Soller; Purchas Gambit

1.d4 e5 2.dxe5 f6

A40

Englund; Behting Gambit

1.d4 e5 2.dxe5 Nc6 

A40

Felbecker Gambit

1.d4 e5 2.dxe5 Nc6 3.Nf3 Bc5

A40

Soller Gambit Deferred

1.d4 e5 2.dxe5 Nc6 3.Nf3 f6

A40

Zilbermints Gambit II, Englund Gambit

1.d4 e5 2.dxe5 Nc6 3.Nf3 h6

A40

Zilbermints Gambit, Englund Gambit

1.d4 e5 2.dxe5 Nc6 3.Nf3 Nge7

A40

Englund Gambit

1.d4 e5 2.dxe5 Nc6 3.Nf3 Qe7

A40

Stockhom Variation, Englund Gambit

1.d4 e5 2.dxe5 Nc6 3.Nf3 Qe7 4.Qd5

A40

Mosquito Gambit, Englund

1.d4 e5 2.dxe5 Qh4

A40

Horwitz Defense

1.d4 e6

A40

Franco-Indian Defense

1.d4 e6

A40

Seneschaud Variation, Dutch

1.d4 e6 2.Bf4 f5 3.g4

A40

English Defense

1.d4 e6 2.c4 b6

A40

Perrin Variation

1.d4 e6 2.c4 b6 3.e4 Bb7 4.Bd3 Nc6

A40

Poli Gambit

1.d4 e6 2.c4 b6 3.e4 Bb7 4.f3 f5 5.exf5 Nh6

A40

Hartlaub Gambit Declined

1.d4 e6 2.c4 b6 3.Nc3 Bb7 4.e4 f5 5.d5

A40

Hartlaub Gambit Accepted

1.d4 e6 2.c4 b6 3.Nc3 Bb7 4.e4 f5 5.exf5 Nf6

A40

Keres Defense, Indian; Kangaroo Defense

1.d4 e6 2.c4 Bb4+

A40

Transpositional Variation, Keres Defense

1.d4 e6 2.c4 Bb4+ 3.Nc3

A40

Zilbermints Gambit

1.d4 e6 2.c4 e5

A40

Borg Gambit

1.d4 g5

A40

Queen Pawn Fianchetto

1.d4 g6

A40

Kotov-Robatsch Defense

1.d4 g6 2.c4 Bg7

A40

Pseudo-Saemisch

1.d4 g6 2.c4 Bg7 3.e4 d6 4.Be3 Nf6 5.f3

A40

Rossolimo Variation

1.d4 g6 2.c4 Bg7 3.e4 d6 4.Nf3 Bg4

A40

Neo-Modern Defense

1.d4 g6 2.c4 Bg7 3.e4 e5

A40

Beefeater Variation

1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 Bxc3+ 5.bxc3 f5

A40

Modern Defense

1.d4 g6 2.c4 Bg7 3.Nc3 d6

A40

Kotov Variation, Modern

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 Nc6

A40

Lizard Defense; Pirc-Diemer Gambit

1.d4 g6 2.h4 Nf6 3.h5

A40

Bogoljubov; Mikenas-Van Geet Defense

1.d4 Nc6

A40

Lundin Defense

1.d4 Nc6

A40

Lithuanian Variation, Mikenas

1.d4 Nc6 2.c4 e5 3.d5 Nce7

A40

Cannstatter Variation, Mikenas

1.d4 Nc6 2.c4 e5 3.d5 Nd4

A40

Pozarek Gambit

1.d4 Nc6 2.c4 e5 3.dxe5 Nxe5 4.Nc3 Nxc4

A40

Montevideo Defense

1.d4 Nc6 2.d5 Nb8

A40

Zaire Defense

1.d4 Nc6 2.d5 Nb8 3.e4 Nf6 5.e5 Ng8

A40

Polish Variation

1.e4 g6 2.d4 Bg7 3.c4 c5 4.Nf3 Qb6

A40

Dunworth Variation, Modern Defense

1.e4 g6 2.d4 Bg7 3.c4 d5 4.exd5 c6 5.dxc6 Bxd4

A41

Anglo-Slav Opening

1.d4 c6 2.c4 d6

A41

Pillsbury Defense; A41; Rat Defense

1.d4 d6 

A41

Wade Defense

1.d4 d6 2.Nf3 Bg4

A41

Averbakh Variation, Modern

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4

A41

Pterodactyl Variation, Modern

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 c5 5.Nf3 Qa5

A42

A42

1.d4 d6 2.c4

A42

English Rat

1.d4 d6 2.c4 e5

A42

Lisbon Gambit

1.d4 d6 2.c4 e5 3.dxe5 Nc6

A42

Randspringer Variation

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 f5

A43

Staunton Defense; Benoni C-G; A43

1.d4 c5

A43

Zilbermints Gambit; Nakamura Gambit, Benoni

1.d4 c5 2.b4 cxb4

A43

Old Benoni

1.d4 c5 2.d5 d6

A43

Schmid Variation, Benoni

1.d4 c5 2.d5 d6 3.Nc3 g6

A43

Franco-Benoni; Franco-Sicilian

1.d4 c5 2.d5 e6 3.e4

A43

Clarendon Court Variation, Benoni

1.d4 c5 2.d5 f5

A43

Benoni-Staunton Gambit

1.d4 c5 2.d5 f5 3.e4

A43

Snail Variation, Benoni

1.d4 c5 2.d5 Na6

A43

Benoni-Indian Defense

1.d4 c5 2.d5 Nf6

A43

Woozle Defense, Benoni

1.d4 c5 2.d5 Nf6 3.Nc3 Qa5

A43

Kingside move order, Benoni

1.d4 c5 2.d5 Nf6 3.Nf3

A43

Habichd; Hawk Variation, Benoni

1.d4 c5 2.d5 Nf6 3.Nf3 c4

A43

Hawk Variation, Benoni

1.d4 c5 2.d5 Nf6 3.Nf3 e4

A43

Benoni Gambit Accepted

1.d4 c5 2.dxc5

A43

Cormorant Gambit, Benoni

1.d4 c5 2.dxc5 b6

A43

Schlenker Defense, Benoni

1.d4 c5 2.dxc5 Na6

A43

Zilbermints-Benoni Gambit

1.d4 c5 2.Nf3 cxd4 3.b4

A43

Tamarkin Countergambit, Benoni

1.d4 c5 2.Nf3 cxd4 3.b4 e5

A43

Franco-Sicilian Hybrid

1.d4 e6 2.c4 c5 3.d5 exd5 4.cxd5 d6 5.Nc3 g6 6.e4 Bg7 7.Nf3 Ne7

A44

Pawn Thrust, Benoni; A44

1.d4 c5 2.d5 e5

A44

Blockade Variation; Semi-Benoni; Russian Variation

1.d4 c5 2.d5 e5 3.e4 d6

A45

Indian Defense; A45

1.d4 Nf6

A45

Basque Opening

1.d4 Nf6 2.b3

A45

Trompowsky; Opocensky; Ruth Opening

1.d4 Nf6 2.Bg5

A45

Poisoned Pawn Variation, Trompowsky

1.d4 Nf6 2.Bg5 c5 3.d5 Qb6 4.Nc3

A45

Chepukaitis Gambit

1.d4 Nf6 2.Bg5 c5 3.d5 Qb6 4.Nc3 Qxb2 5.Bd2 Qb6

A45

Borg Variation, Trompowsky

1.d4 Nf6 2.Bg5 Ne4 3.Bf4 g5

A45

Edge Variation, Trompowsky

1.d4 Nf6 2.Bg5 Ne4 3.Bh4

A45

Hergert Gambit #2, Trompowsky

1.d4 Nf6 2.Bg5 Ne4 3.Bh4 c6 4.Nd2 Qa5 5.c3 Nxd2 6.Qxd2 d5 7.e4

A45

Hergert Gambit #1, Trompowsky

1.d4 Nf6 2.Bg5 Ne4 3.Bh4 d5 4.f3 Nf6 5.Nc3 Bf5 6.e4

A45

Raptor Variation, Trompowsky

1.d4 Nf6 2.Bg5 Ne4 3.h4

A45

Hergert Gambit, Trompowsky

1.d4 Nf6 2.Bg5 Ne4 3.h4 Nxg5 4.hxg5 e5

A45

Pawn Push Variation

1.d4 Nf6 2.d5

A45

Omega Gambit

1.d4 Nf6 2.e4

A45

Arafat Gambit

1.d4 Nf6 2.e4 Nxe4 3.Bd3 Nf6 4.Bg5

A45

Paleface Attack

1.d4 Nf6 2.f3

A45

Webster Gambit

1.d4 Nf6 2.f3 c5 3.d5 e6 4.e4 exd5 5.e5

A45

Blackmar-Diemer Gambit Deferred

1.d4 Nf6 2.f3 d5 3.e4 

A45

Kraus-Muhlherr Counter Gambit

1.d4 Nf6 2.f3 d5 3.e4 e5 4.dxe5 Nxe4

A45

Gedult Attack

1.d4 Nf6 2.f3 d5 3.g4

A45

Gedult-Gunderam System

1.d4 Nf6 2.f3 d5 3.g4

A45

Linder Counter Gambit

1.d4 Nf6 2.f3 e6 3.e4 Nxe4

A45

Canard Attack

1.d4 Nf6 2.f4

A45

Ueberlinger Gambit

1.d4 Nf6 2.g3 e5

A45

Bullfrog; Weidenhagen; Krabbe; Ochsenfrosch

1.d4 Nf6 2.g4

A45

Bronstein Gambit

1.d4 Nf6 2.g4

A45

Oshima Defense

1.d4 Nf6 2.g4 e5

A45

Gibbins-Wiedehagen Gambit Accepted

1.d4 Nf6 2.g4 Nxg4

A45

Stummer Gambit

1.d4 Nf6 2.g4 Nxg4 3.e4 d6 4.Be2 Nf6 5.Nc3

A45

Maltese Falcon

1.d4 Nf6 2.g4 Nxg4 3.f3 Nf6 4.e4

A45

Reversed Chigorin Defense

1.d4 Nf6 2.Nc3 c5

A45

Von Beivorseen

1.d4 Nf6 2.Nc3 c5 3.dxc5

A45

Malich Gambit

1.d4 Nf6 2.Nc3 d5 3.Bg5 c5 4.Bxf6 gxf6 5.e4 dxe4 6.d5

A45

Huebsch Gambit

1.d4 Nf6 2.Nc3 d5 3.e4 Nxe4

A45

Maddigan Gambit

1.d4 Nf6 2.Nc3 e5

A45

Lazard Gambit; Maddigan Gambit

1.d4 Nf6 2.Nd2 e5

A46

Knights Variation, Indian Game; A46

1.d4 Nf6 2.Nf3

A46

Polish Defense

1.d4 Nf6 2.Nf3 b5

A46

Spielmann-Indian

1.d4 Nf6 2.Nf3 c5

A46

Pseudo-Benko Gambit

1.d4 Nf6 2.Nf3 c5 3.d5 b5

A46

Czech-Indian

1.d4 Nf6 2.Nf3 c6

A46

London System

1.d4 Nf6 2.Nf3 e6 3.Bf4

A46

Torre Attack

1.d4 Nf6 2.Nf3 e6 3.Bg5

A46

Petrosian Gambit

1.d4 Nf6 2.Nf3 e6 3.Bg5 c5 4.e3 b6 5.d5

A46

Swiss; Wagner Gambit

1.d4 Nf6 2.Nf3 e6 3.Bg5 c5 4.e4

A46

Nimzovich Variation, Torre Attack

1.d4 Nf6 2.Nf3 e6 3.Bg5 h6

A46

Yusupov-Rubinstein System

1.d4 Nf6 2.Nf3 e6 3.e3

A46

Dory Defense

1.d4 Nf6 2.Nf3 Ne4

A47

Capablanca Variation, Indian Game; A47

1.d4 Nf6 2.Nf3 b6

A47

Torre Attack

1.d4 Nf6 2.Nf3 b6 3.Bg5

A47

Schnepper Gambit

1.d4 Nf6 2.Nf3 b6 3.c3 e5

A47

Marienbad Variation

1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5

A47

Berg Variation

1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5 5.c4 cxd4 6.Qxd4

A48

Pseudo-King's Indian Variation; A48

1.d4 Nf6 2.Nf3 g6

A48

London System, Torre Attack

1.d4 Nf6 2.Nf3 g6 3.Bf4

A48

London Variation

1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.Nbd2

A48

Fianchetto Defense, Torre Attack

1.d4 Nf6 2.Nf3 g6 3.Bg5

A48

Euwe Variation, Torre Attack

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 c5

A48

King's Indian Variation

1.d4 Nf6 2.Nf3 g6 3.e3 Bg7 4.Bd3 d6

A49

Przepiorka Variation; A49

1.d4 Nf6 2.Nf3 g6 3.g3

A50

Normal Variation, Indian Game; A50

1.d4 Nf6 2.c4

A50

Pyrenees Gambit

1.d4 Nf6 2.c4 b5

A50

Queen's Indian Defense; Saemisch-Indian

1.d4 Nf6 2.c4 b6

A50

Medusa Gambit

1.d4 Nf6 2.c4 g5

A50

Van Geet; Kevitz; Trajkovic; Mexican

1.d4 Nf6 2.c4 Nc6

A50

Horsefly Gambit

1.d4 Nf6 2.c4 Nc6 3.d5 Ne5 4.f4

A51

Budapest Defense; A51

1.d4 Nf6 2.c4 e5

A51

Fajarowicz Variation, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ne4

A51

Bonsdorf Variation, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ne4 4.a3 b6

A51

Steiner Variation, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ne4 4.Qc2

A52

Normal Variation, Budapest; A52

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4

A52

Rubinstein Variation, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Bf4

A52

Kornl Richter Gambit, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Bf4 Nc6 5.Nf3 Bb4+ 6.Nc3 Bxc3+

A52

Center Play Variation, Budapest; Alekhine Variation

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4

A52

Balogh; Tartakower C-G, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 d6

A52

Barmina Gambit, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Bc5

A52

Wikstrom Gambit, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Nbc6

A52

Abonyi Variation, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Nec6

A52

Adler Variation, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Nf3

A53

Old Indian Defense; Chigorin Indian Defense; A53

1.d4 Nf6 2.c4 d6

A53

Aged Gibbon Gambit

1.d4 Nf6 2.c4 d6 3.g4

A53

Janowski Variation, Old Indian

1.d4 Nf6 2.c4 d6 3.Nc3 Bf5

A53

Grinberg Gambit, Old Indian

1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 4.e4

A53

Ukranian Variation

1.d4 Nf6 2.c4 d6 3.Nc3 e5

A53

Duz-Khotimirsky Variation

1.d4 Nf6 2.c4 d6 3.Nc3 Nbd7 4.e3 e5 5.Bd3

A53

Tartakower-Indian

1.d4 Nf6 2.c4 d6 3.Nf3 Bg4

A54

Two Knights Variation, Old Indian; A54

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3

A55

Normal Variation, Old Indian; A55

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4

A56

Vulture Defense, Benoni

1.d4 c5 2.d5 Nf6 3.c4 Ne4

A56

Hromadka Defense; Loose Gambit: A56

1.d4 Nf6 2.c4 c5

A56

Hromadka System, Benoni

1.d4 Nf6 2.c4 c5 3.d5 d6

A56

Lundin; Bronstein Counter-Gambit

1.d4 Nf6 2.c4 c5 3.d5 d6 4.Nc3 g6 5.e4 b5

A56

Petrosian System; Czech Benoni Defense

1.d4 Nf6 2.c4 c5 3.d5 e5

A56

Czech Variation, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7

A56

King's Indian System, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6

A56

Vulture Variation; Der Geier

1.d4 Nf6 2.c4 c5 3.d5 Ne4

A56

Weenink Variation, Benoni

1.d4 Nf6 2.c4 c5 3.dxc5 e6

A57

Benko Gambit; Volga; Opocensky; Vaitonis; A57

1.d4 Nf6 2.c4 c5 3.d5 b5

A57

Sosonko Variation, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.a4

A57

Bishop Attack, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.Bg5

A57

Benko Gambit Accepted

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5

A57

Pawn Return Variation, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.b6

A57

Central Storming Variation, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.f4

A57

Modern Variation, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.e3

A57

Dlugy Variation, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.f3

A57

Zaitsev System, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 

A57

Nescafe Frappe Attack, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 axb5 6.e4 b4 7.Nb5

A57

Zaitsev Variation, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 axb5 6.e4 b4 7.Nb5 d6 8.Nf3 g6 9.Bc4

A57

Benko Gambit Declined; Hjoerring Countergambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.e4

A57

Pseudo-Saemisch, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.f3

A57

Mutkin Countergambit, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.g4

A57

Quiet Line, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nd2

A57

Main Line, Benko Gambit Declined

1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nf3

A58

Fully Accepted Variation, Benko Gambit; A58

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6

A58

Fianchetto Variation, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 g6 7.Nf3 d6 8.g3 Bg7 9.Bg2

A59

A59

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4

A59

King Walk Variation, Benko Gambit

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4 Bxf1 8.Kxf1 g6 9.g3 Bg7 10.Kg2 O-O

A60

Tal Variation, Modern Variation, Benoni; A60

1.d4 Nf6 2.c4 c5 3.d5 e6

A60

Modern Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6

A61

A61

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3

A61

Snake Variation, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 Bd6

A61

Penrose Variation, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Bd3

A61

Uhlmann Variation, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Bg5

A61

Nimzovich Variation, Knight's Tour Variation, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Nd2

A62

A62

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3

A62

Fianchetto Variation, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2

A62

Hastings Defense, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O Nbd7

A63

A63

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O a6

A64

A64

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O a6 10.a4 Nbd7 11.Nd2

A65

King Pawn lines, Benoni; A65

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4

A66

Pawn Storm Variation, Benoni; A66

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4

A66

Mikenas V, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.e5

A67

Taimanov Variation, Benoni; A67

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5

A68

A68

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3

A68

Four Pawns Attack, Benoni

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O

A69

A69

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O 9.Be2 Re8

A70

Classical Variation, Benoni; A70

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3

A71

A71

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Bg5

A72

A72

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2

A73

A73

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O

A74

A74

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O a6

A75

Argentine Attack, Benoni; A75

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O a6 10.a4 Bg4

A76

Czerniak Defesne, Benoni; A76

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8

A77

A77

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2

A78

A78

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6

A79

A79

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.f3

A80

Dutch Defense; A80

1.d4 f5

A80

Seneschaud Gambit, Dutch

1.d4 f5 2.Bf4 e6 3.g4

A80

Hopton Attack, Dutch

1.d4 f5 2.Bg5

A80

Blackmar's Second Gambit, Dutch

1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.f3

A80

Lisbon Gambit, Dutch; Krejcik Gambit

1.d4 f5 2.g4

A80

Hevendehl Gambit, Dutch

1.d4 f5 2.g4 e5

A80

Tate Gambit, Dutch

1.d4 f5 2.g4 fxg4 3.e4 d5 4.Nc3

A80

Korchnoi's Variation, Dutch

1.d4 f5 2.h3

A80

Janzen-Korchnoi Gambit, Dutch

1.d4 f5 2.h3 Nf6 3.g4

A80

Raphael Variation, Dutch

1.d4 f5 2.Nc3

A80

Kingfisher Gambit, Dutch

1.d4 f5 2.Nc3 d5 3.e4

A80

Spielmann Gambit, Dutch

1.d4 f5 2.Nc3 Nf6 3.g4

A80

Barcza Variation, Dutch

1.d4 f5 2.Nf3 Nf6 3.c3

A80

Alapin; Ulvestad; Manhattan; Kmoch Variation, Dutch

1.d4 f5 2.Qd3 

A80

Anti-Stonewall, Dutch

1.d4 f5 2.Qd3 d5 3.g4

A80

Anti-Modern, Dutch

1.d4 f5 2.Qd3 d6 3.g4

A80

Anti-Classical Line, Dutch

1.d4 f5 2.Qd3 e6 3.g4

A80

Anti-Leningrad Variation, Dutch

1.d4 f5 2.Qd3 g6 3.g4

A80

Manhattan Gambit, Dutch

1.d4 f5 2.Qd3 Nf6 3.g4

A80

Pretzel Gambit, Dutch

1.d4 f5 2.Qd3 Nf6 3.g4

A81

Dutch Indian; Leningrad Variation, Dutch; A81

1.d4 f5 2.g3

A81

Basman Variation, Dutch

1.d4 f5 2.g3 g6 3.Bg2 Bg7 4.Nf3 c6 5.O-O Nh6

A81

Carlsbad Variation, Dutch

1.d4 f5 2.g3 g6 3.Bg2 Bg7 4.Nh3

A81

Antoshin-Hort Variation, Dutch

1.d4 f5 2.g3 Nf6 3.Bg2 d6

A81

Ilyin-Genevsky Variation, Dutch

1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 Be7 5.O-O O-O 6.c4 d6

A81

Blackburne Variation, Dutch

1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nh3

A81

Semi-Leningrad Variation, Dutch

1.d4 f5 2.g3 Nf6 3.Bg2 g6

A82

Staunton Gambit, Dutch; A82

1.d4 f5 2.e4 

A82

Balogh Defense, Dutch

1.d4 f5 2.e4 d6

A82

Staunton Gambit Accepted, Dutch

1.d4 f5 2.e4 fxe4

A82

Tartakower Variation, Dutch

1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.g4

A82

American Gambit, Dutch

1.d4 f5 2.e4 fxe4 3.Nd2

A83

General Variation, Staunton Gambit, Dutch; A83

1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5

A83

Nimzovich Variation, Dutch

1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 b6

A83

Chigorin Variation, Dutch

1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 c6

A83

Lasker Variation, Dutch

1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 g6 5.f3

A84

Slav Stonewall, Dutch

1.d4 d5 2.c4 e6 3.Nc3 c6 4.e3 f5

A84

Bellon Gambit

1.d4 e6 2.c4 f5 3.e4

A84

A84

1.d4 f5 2.c4

A84

Classical Variation, Dutch

1.d4 f5 2.c4 e6

A84

Bellon Gambit, Dutch

1.d4 f5 2.c4 e6 3.e4

A84

Rubinstein Variation, Dutch

1.d4 f5 2.c4 e6 3.Nc3

A84

Stonewall Variation, Dutch

1.d4 f5 2.c4 e6 3.Nc3 Nf6 4.g3 c6 5.Bg2 d5 6.O-O Bd6

A84

Queen's Knight Variation, Dutch

1.d4 f5 2.c4 Nf6 3.Nc3

A84

Krause Variation, Dutch

1.d4 f5 2.c4 Nf6 3.Nc3 d6 4.Nf3 Nc6

A85

 

1.d4 f5 2.c4 g6 3.Nc3

A85

Bladel Variation, Dutch

1.d4 f5 2.c4 g6 3.Nc3 Nh6

A85

Normal Variation, Dutch

1.d4 f5 2.c4 Nf6

A85

Ozol Variation, Dutch

1.d4 f5 2.c4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Bg5

A86

Fianchetto Variation, Dutch; A86

1.d4 f5 2.c4 Nf6 3.g3

A86

Leningrad Variation, Dutch

1.d4 f5 2.c4 Nf6 3.g3 g6

A87

A87

1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3

A87

Fluid Formation, Dutch

1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6

A88

Warsaw Variation, Dutch; A88

1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 c6

A89

Matulovic Variation, Dutch; A89

1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 Nc6

A90

A90

1.d4 f5 2.c4 Nf6 3.g3 e6

A90

Classical Variation, Dutch

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2

A90

Nimzo-Dutch Variation

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Bb4+

A91

A91

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7

A91

Botvinnik-Bronstein Variation, Dutch

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nc3 O-O 6.e3

A91

Blackburne Attack, Dutch

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Bg7 5.Nh3

A92

A92

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3

A92

Alekhine Variation, Dutch

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O Ne4

A93

Botvinnik Variation, Dutch; A93

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3

A94

A94

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3 c6

A95

A95

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.Nc3

A96

A96

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6

A97

Ilyin-Zhenevsky Variation, Dutch; A97

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8

A98

A98

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.Qc2

A99

A99

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.b3

B00

Ware Defense

1.e4 a5

B00

Corn Stalks

1.e4 a5

B00

Snagkeouss Defense

1.e4 a5 2.d4 Nc6

B00

St George; Birmingham; Baker

1.e4 a6 

B00

San Jorge Variation

1.e4 a6 2.d4 b5 3.Nf3 Bb7 4.Bd3 d6 5.O-O g6 6.c3 Bg7

B00

Polish Variation, St George Defense

1.e4 a6 2.d4 b5 3.Nf3 Bb7 4.Bd3 e6

B00

Zilbermints Gambit, St George Defense

1.e4 a6 2.d4 e5

B00

San Jorge Variation

1.e4 a6 2.d4 e6

B00

Three Pawn Attack, St George

1.e4 a6 2.d4 e6 3.c4

B00

Sanky-Georg Gambit, St George

1.e4 a6 2.d4 e6 3.c4 b5

B00

Woodchuck Variation, St George

1.e4 a6 2.d4 Nc6

B00

Owen's Defense; Greek Defense

1.e4 b6

B00

Guatemalan Defense

1.e4 b6 2.d4 Ba6

B00

Matovinsky Gambit

1.e4 b6 2.d4 Bb7 3.Bd3 f5

B00

Matovinsky Gambit

1.e4 b6 2.d4 Bb7 3.Bd3 f5 4.exf5 Bxg2 5.Qh5+ g6

B00

Naselwaus Variation, Owen's Defense

1.e4 b6 2.d4 Bb7 3.Bg5

B00

Wind Gambit, Owen Defense

1.e4 b6 2.d4 Bb7 3.f3 e5

B00

Smith Gambit, Owen Defense

1.e4 b6 2.d4 Bb7 3.Nf3

B00

Hekili-Loa Gambit, Owen Defense

1.e4 b6 2.d4 c5 3.dxc5 Nc6

B00

Mao Tse Tung; Duras

1.e4 f5

B00

Fred; From Reversed

1.e4 f5

B00

Tiers Counter-Gambit

1.e4 f5

B00

Barnes Defense

1.e4 f6

B00

Basman Defense; Macho Grob

1.e4 g5

B00

Basman; Macho Grob; Borg

1.e4 g5 

B00

Borg Gambit

1.e4 g5 2.d4 Bg7

B00

Zilbermints Gambit, Borg

1.e4 g5 2.d4 e5

B00

Borg Defense; Troon Gambit

1.e4 g5 2.d4 h6 3.h4 g4

B00

Pickering (Goldsmith) Defense

1.e4 h5

B00

Picklepuss Defense

1.e4 h5 2.d4 Nf6

B00

Carr Defense

1.e4 h6

B00

Zilbermints Gambit, Carr Defense

1.e4 h6 2.d4 e5

B00

Lemming Defense

1.e4 Na6

B00

Nimzovich Defense

1.e4 Nc6

B00

Wheeler Gambit, Nimzovich Defense

1.e4 Nc6 2.b4 Nxb4 3.c3 Nc6 4.d4

B00

Pseudo-Spanish Variation

1.e4 Nc6 2.Bb5

B00

Scandanavian Variation, Nimzovich Defense

1.e4 Nc6 2.d4 d5

B00

Hornung Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 d5 3.Be3

B00

Aachen Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 d5 3.exd5 Nb4

B00

Marshall Gambit, Nimzovich

1.e4 Nc6 2.d4 d5 3.exd5 Qxd5 4.Nc3

B00

Bogoljubow Variation, Nizovich Defense

1.e4 Nc6 2.d4 d5 3.Nc3

B00

Brandics Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 d5 3.Nc3 a6

B00

Richter Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 d5 3.Nc3 dxe4 4.d5 Nb8 5.f3

B00

Nimzovich Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 d5 3.Nc3 dxe4 4.d5 Ne5

B00

Alekseev Variation, Nimzovich; Heinola-Deppe Gambit

1.e4 Nc6 2.d4 d5 3.Nc3 e5

B00

Erben Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 d5 3.Nc3 g6

B00

Vehre Variation, Nimzovich Defense

1.e4 Nc6 2.d4 d5 3.Nc3 Nf6

B00

Mikenas Variation, Nimzovich Defense

1.e4 Nc6 2.d4 d6

B00

Kennedy Variation, Nimzovich

1.e4 Nc6 2.d4 e5

B00

Linksspringer Variation, Nimzovich Defense

1.e4 Nc6 2.d4 e5 3.d5

B00

Bileefelder Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 e5 3.dxe5 Bc5

B00

Burgar Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 e5 3.dxe5 d6

B00

Hammer Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 e5 3.dxe5 f6

B00

Riemann Defense, Nimzovich Defense

1.e4 Nc6 2.d4 e5 3.dxe5 Nxe5 4.f4 Nc6

B00

Keres Attack, Nimzovich Defense

1.e4 Nc6 2.d4 e5 3.dxe5 Nxe5 4.Nc3

B00

Paulsen Attack, Nimzovich Defense

1.e4 Nc6 2.d4 e5 3.dxe5 Nxe5 4.Nf3

B00

Herford Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 e5 3.dxe5 Qh4

B00

French Connection, Nimzovich Defense

1.e4 Nc6 2.d4 e6

B00

Neo-Mongoloid Defense, Nimzovich

1.e4 Nc6 2.d4 f6

B00

Pirc Connection, Nimzovich Defense

1.e4 Nc6 2.d4 g6

B00

Breyer Defense, Nimzovich

1.e4 Nc6 2.Nc3 Nf6

B00

Williams Variation, Nimzovich

1.e4 Nc6 2.Nf3 d6

B00

Franco-Nimzovich Variation

1.e4 Nc6 2.Nf3 e6

B00

Colorado Defense, Nimzovich; Lean Variation

1.e4 Nc6 2.Nf3 f5

B00

Colorado Counter Accepted, Nimzovich Defense

1.e4 Nc6 2.Nf3 f5 3.exf5

B00

El Columpio Defense, Nimzovich Defense

1.e4 Nc6 2.Nf3 Nf6 3.e5 Ng4

B00

Adams Defense

1.e4 Nh6

B00

Wild Bull Defense

1.e4 Nh6

B01

Center Counter; Scandanavian; B01

1.e4 d5

B01

Zilbermints Gambit, Center Counter

1.e4 d5 2.b4

B01

Blackbunre-Kloosterboer Gambit, Center Counter

1.e4 d5 2.exd5 c6 3.dxc6 e5

B01

Atkinson (Kloosterboer) Variation, Center Counter

1.e4 d5 2.exd5 c6 3.dxc6 e5

B01

Blackburne Gambit, Center Counter

1.e4 d5 2.exd5 c6 3.dxc6 Nxc6

B01

Boehnke Gambit, Center Counter

1.e4 d5 2.exd5 e5

B01

Boehnke Gambit Accepted, Center Counter

1.e4 d5 2.exd5 e5 3.dxe6 Bxe6

B01

Marshall Gambit, Scandanavian G; Modern Variation, CC

1.e4 d5 2.exd5 Nf6  

B01

Panov Transfer, Center Counter

1.e4 d5 2.exd5 Nf6 3.c4 c6

B01

Icelandic-Palme Gambit, CC

1.e4 d5 2.exd5 Nf6 3.c4 e6

B01

Portuguese Variation, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 Bg4

B01

Portuguese Gambit, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 Bg4 4.f3 Bf5 5.Bb5+ Nbd7

B01

Kadas Gambit, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 c6 4.dxc6 e5

B01

Wing Gambit, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 g6 4.c4 b5

B01

Marshall Variation, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 Nxd5

B01

Kiel Variation, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.c4 Nb4

B01

Tomalty Gambit, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.c4 Nf6 5.Nc3 c5

B01

Gipslis Variation, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.Nf3 Bg4

B01

Richter Variation, Center Counter

1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.Nf3 g6

B01

Mieses-Kotroc Variation, Center Counter

1.e4 d5 2.exd5 Qxd5

B01

Leonhardt (Rosen) Gambit, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.b4

B01

Anderssen Variation, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5

B01

Collijn Variation, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5 5.Nf3 Bg4

B01

Mieses Variation, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6

B01

Gruenfeld Variation, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bf5 6.Ne5 c6 7.g4

B01

Lasker Variation, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bg4 6.h3

B01

Gubinsky-Melts Defense, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6

B01

Schiller-Pytel Variation, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.d4 c6

B01

Bronstein Variation, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.d4 Nf6 5.Nf3 a6

B01

Closed Scandavian

1.e4 d5 2.Nc3

B02

Alekhine's Defense; B02

1.e4 Nf6 

B02

Krejcik Variation, Alekhine

1.e4 Nf6 2.Bc4 

B02

Fried Fox, Alekhine; Krejcik Gambit

1.e4 Nf6 2.Bc4 Nxe4 3.Bxf7+

B02

Maroczy Variation, Alekhine

1.e4 Nf6 2.d3

B02

Welling Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.b3

B02

Kmoch Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.Bc4 Nb6 4.Bb3 c5 5.d3

B02

Hunt Gambit, Alekhine; Two Pawn Attack

1.e4 Nf6 2.e5 Nd5 3.c4

B02

Steiner Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.b3

B02

Lasker Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5

B02

Mikenas Gambit, Alekhine

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Bc4 e6 6.Nc3 d6 7.Nxd5 exd5 8.Bxd5

B02

Matsukevich Gambit, Alekhine

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Nc3 Nxc3 6.dxc3 d6 7.Bg5

B02

Buntin Gambit, Alekhine

1.e4 Nf6 2.e5 Nd5 3.e6

B02

Buckley Attack, Alekhine

1.e4 Nf6 2.e5 Nd5 3.Na3

B02

Saemisch Attack, Alekhine

1.e4 Nf6 2.e5 Nd5 3.Nc3

B02

Mokele Mbembe; Knight's Tour

1.e4 Nf6 2.e5 Ne4

B02

Retreat; Brooklyn Variation, Alekhine

1.e4 Nf6 2.e5 Ng8

B02

Everglades Defense, Alekhine

1.e4 Nf6 2.e5 Ng8 3.d4 f5

B02

Scandanavian Variation, Alekhine

1.e4 Nf6 2.Nc3 d5

B02

Myers Gambit, Alekhine

1.e4 Nf6 2.Nc3 d5 3.d3 dxe4 4.Bg5

B02

Spielmann Variation, Alekhine

1.e4 Nf6 2.Nc3 d5 3.e5 Nfd7 4.e6

B02

Noch Gambit, Alekhine

1.e4 Nf6 2.Nc3 d5 3.exd5

B02

Geschev Gambit, Alekhine

1.e4 Nf6 2.Nc3 d5 3.exd5 c6

B02

John Tracy Gambit, Alekhine

1.e4 Nf6 2.Nf3

B03

B03

1.e4 Nf6 2.e5 Nd5 3.d4

B03

Wall Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 c5

B03

Balogh Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Bc4

B03

Hunt Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.c5

B03

Four Pawns Attack; Chase V

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4

B03

Trifunovic Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 Bf5

B03

Cambridge Gambit, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g5

B04

B04

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3

B04

Panov Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.h3

B04

Larsen Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5

B04

Alburt Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6

B04

Keres Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Bc4 Nb6 6.Bb3 Bg7 7.a4

B04

Karpov Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.c4 Nb6 6.h3 Bg7 8.Be2

B04

Schmid Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nb6

B05

B05

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4

B05

Flohr Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.Be2 c6

B05

Alekhine Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.c4

B06

Pirc; Robatsch; Modern; King Pawn Fianchetto; B06

1.e4 g6

B06

Monkey's Bum, Pirc

1.e4 g6 2.Bc4 Bg7 3.Qf3 e6 4.d4

B06

Bishop Attack

1.e4 g6 2.d4 Bg7 3.Bc4

B06

Buecker Gambit

1.e4 g6 2.d4 Bg7 3.Bc4 b5

B06

Westermann Gambit

1.e4 g6 2.d4 Bg7 3.Bd2

B06

Wind Gambit

1.e4 g6 2.d4 Bg7 3.Bd3

B06

Three Pawns Attack

1.e4 g6 2.d4 Bg7 3.f4

B06

Pterodactyl, Pirc

1.e4 g6 2.d4 Bg7 3.Nc3 c5

B06

Gurgenidze Defense, Modern Defense

1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.f4 d5 5.e5 h5

B06

Mittenberger Gambit, Modern Defense

1.e4 g6 2.d4 Bg7 3.Nc3 d5

B06

Anti-Modern

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Bc4 c6 5.Qe2

B06

Pseudo-Austrian Attack

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.f4

B06

Two Knight Variation, Modern Defense

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Nf3

B06

Suttles Variation, Modern Defense

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Nf3 c6

B06

Mongredien Defense, Pirc

1.e4 g6 2.d4 Bg7 3.Nf3 b6

B06

Geller's System, Modern Defense

1.e4 g6 2.d4 Bg7 3.Nf3 d6 3.c3

B06

Rossolimo Variation, Modern Defense

1.e4 g6 2.d4 Bg7 3.Nf3 d6 3.c4 Bg4

B06

Accelerated Gurgenidze

1.e4 g6 2.d4 Bg7 3.Nf3 d6 3.Nc3 c6

B06

Small Center Variation, Pirc

1.e4 g6 2.d4 Bg7 3.Nf3 d6 3.Nc3 e6

B06

Fianchetto Gambit, Modern Defense

1.e4 g6 2.d4 f5

B06

Norwegian Defense

1.e4 g6 2.d4 Nf6

B06

Masur Gambit

1.e4 g6 2.d4 Nh6 3.Nc3 f5 4.Bxh6 Bxh6 5.exf5 O-O

B07

B07

1.e4 d6

B07

Maroczy Defense, Pirc

1.e4 d6 2.d4 e5

B07

Philidor Gambit, Pirc

1.e4 d6 2.d4 e5 3.dxe5 Bd7

B07

Small Center Defense

1.e4 d6 2.d4 e6

B07

Balogh Defense, Pirc

1.e4 d6 2.d4 f5

B07

Pirc Defense

1.e4 d6 2.d4 Nf6

B07

Lion's Jaw, Pirc

1.e4 d6 2.d4 Nf6 3.f3

B07

Czech Defense

1.e4 d6 2.d4 Nf6 3.Nc3 c6

B07

Pirc; Ufimtsev; Antal Defense

1.e4 d6 2.d4 Nf6 3.Nc3 g6

B07

Kholmov System, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bc4

B07

Classical System, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2

B07

Chinese Variation, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.g4

B07

Bayonet Attack, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.h4

B07

Sveshnikov-Jansa Attack, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 c6 5.h3

B07

150 Attack

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 c6 5.Qd2

B07

Panov; Opatijav; Byrne Variation, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5

B07

Anti-Philidor

1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7 4.f4

B07

Roscher Gambit, Pirc

1.e4 d6 2.d4 Nf6 3.Nf3

B08

B08

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3

B08

Two Knights System, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 

B08

Quiet System, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2

B08

Parma Defense, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Bg4

B08

Czech Defense, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O c6

B08

Chigorin Line, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Nc6

B08

Schlechter Variation, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.h3

B09

Austrian Attack, Pirc; B09

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4

B09

Ljubojevic Variation, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Bc4

B09

Austrian; Yugoslav Defense, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3

B09

Dragon Formation, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 c5

B09

Weiss Variation, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3

B09

Kurajica Variation, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Be3

B09

Unzicker Attack, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.e5

B10

Caro-Kann Defense; B10

1.e4 c6 

B10

Hillbilly Attack, Caro-Kann

1.e4 c6 2.Bc4

B10

Modern; English Variation, Accelerated Panov; Caro-Kann

1.e4 c6 2.c4

B10

Breyer Variation, Caro-Kann

1.e4 c6 2.d3

B10

Stein Attack, Caro-Kann

1.e4 c6 2.d3 d5 3.Nd2 g6 4.g3 Bg7 5.Bg2 e5 6.Ngf3 Ne7 7.O-O O-O 8.b4

B10

Massachussets Defense, Caro-Kann

1.e4 c6 2.d4 f5

B10

Masi Variation, Caro-Kann

1.e4 c6 2.d4 Nf6

B10

Scorpion-Horus Gambit, Caro-Kann

1.e4 c6 2.Nc3 d5 3.d3 dxe4 4.Bg5

B10

Goldman Variation, Caro

1.e4 c6 2.Nc3 d5 3.Qf3

B10

Two Knights Variation, Caro

1.e4 c6 2.Nf3 d5 3.Nc3

B11

B11

1.e4 c6 2.Nc3

B11

Two Knights Attack, Caro Kann

1.e4 c6 2.Nc3 d5 3.Nf3

B11

Mindeno Variation, Caro-Kann

1.e4 c6 2.Nc3 d5 3.Nf3 Bg4

B11

Retreat Line, Mindeno Variation, Caro-Kann

1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bh5

B12

B12

1.e4 c6 2.d4

B12

Landau Gambit, Caro-Kann

1.e4 c6 2.d4 d5 3.Bd3 Nf6 4.e5 Nfd7 6.e6

B12

Mieses Gambit, Caro

1.e4 c6 2.d4 d5 3.Be3

B12

Diemer-Duhm Gambit, Caro

1.e4 c6 2.d4 d5 3.c4

B12

Advance Variation, Caro

1.e4 c6 2.d4 d5 3.e5 

B12

Prins Attack, Caro-Kann

1.e4 c6 2.d4 d5 3.e5 Bf5 4.b4

B12

Bayonet Variation, Caro

1.e4 c6 2.d4 d5 3.e5 Bf5 4.g4

B12

Tal Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4

B12

Van der Wiel Attack, Caro-Kann

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3

B12

Dreyev Defense, Caro-Kann

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 Qb6

B12

Bronstein Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Ne2

B12

Short Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3

B12

Botvinnik-Carls Defense, Caro-Kann

1.e4 c6 2.d4 d5 3.e5 c5

B12

Maroczy Variation, Caro

1.e4 c6 2.d4 d5 3.f3

B12

Fantasy; Lilienfisch Variation, Caro

1.e4 c6 2.d4 d5 3.f3

B12

Maroczy Gambit, Caro-Kann

1.e4 c6 2.d4 d5 3.f3 dxe4 4.fxe4 e5 5.Nf3 exd4 6.Bc4

B12

Modern Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.Nd2

B12

New Caro-Kann

1.e4 c6 2.d4 d5 3.Nd2 g6

B12

Edinburgh Variation, Caro

1.e4 c6 2.d4 d5 3.Nd2 Qb6

B12

Ulysses Gambit, Caro

1.e4 c6 2.d4 d5 3.Nf3 dxe4 4.Ng5

B12

De Bruycker Defense, Caro

1.e4 c6 2.d4 Na6

B12

Hector Gambit, Caro

1.e4 c6 2.Nc3 d5 3.Nf3 dxe4 4.Ng5

B13

Exchange Variation, Caro; B13

1.e4 c6 2.d4 d5 3.exd5

B13

Rubinstein Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.exd5 cxd3 4.Bd3 Nc6 5.c3 Nf6 6.Bf4

B13

Panov-Botvinnik; Gunderam Attack

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4

B14

B14

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3

B14

Carlsbad Line, Caro-Kann

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 e6

B14

Czerniak Line, Caro-Kann

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 Qa5

B14

Reifir-Spielmann Line, Caro-Kann

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 Qb6

B15

B15

1.e4 c6 2.d4 d5 3.Nc3

B15

Gurgenidze Variation, Caro

1.e4 c6 2.d4 d5 3.Nc3 b5

B15

Von Hennig Gambit, Caro

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Bc4

B15

Milner-Barry Gambit, Caro; Rasa-Studier Gambit

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.f3

B15

Knight Variation, Caro

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6

B15

Tarrasch (Alekhine) Gambit, Caro

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Bd3

B15

Tartakower Variation, Caro

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6

B15

Forgacs Variation, Caro Kann

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4

B15

Gurgenidze System, Caro-Kann

1.e4 c6 2.d4 d5 3.Nc3 g6

B15

Gurgenidze Variation, Caro

1.e4 c6 2.d4 d5 3.Nc3 g6 4.e5 Bg7 5.f4 h5

B15

Campomanes Attack, Caro

1.e4 c6 2.d4 d5 3.Nc3 Nf6

B16

Finnish Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 h6

B16

Nimzovich; Bronstein-Larsen, Caro; B16

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6

B17

Karpov Variation, Caro-Kann; B17

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7

B17

Smyslov Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6

B17

Tiviakov-Fischer Attack, Caro-Kann

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Nxf6+ Nxf6

B17

Kasparov Attack, Caro-Kann

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Ng3

B17

Ivanchuk Defense, Caro Kann

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ndf6

B18

Classical Variation, Caro; B18

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5

B18

Flohr Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nh3

B19

B19

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3

B19

Seirawan Variation, Caro-Kann

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.e5 Bh7 9.Bd3 Bxd3 10.Qxd3

B20

Sicilian Defense; B20

1.e4 c5

B20

Mengarini Gambit, Sicilian

1.e4 c5 2.a3 

B20

Mengarini Gambit, Sicilian

1.e4 c5 2.a3 Nc6 3.b4

B20

Snyder Variation, Sicilian

1.e4 c5 2.b3

B20

Queen Fianchetto Variation, Sicilian

1.e4 c5 2.b3 b6

B20

Wing Gambit, Sicilian

1.e4 c5 2.b4

B20

Marshall Variation, Sicilian

1.e4 c5 2.b4 cxb4 3.a3 

B20

Wing; Carlsbad Variation, Sicilian

1.e4 c5 2.b4 cxb4 3.a3 bxa3

B20

Marienbad Variation, Sicilian

1.e4 c5 2.b4 cxb4 3.a3 d5 4.exd5 Qxd5 5.Bb2

B20

Abrahams Variation, Sicilian Wing Gambit

1.e4 c5 2.b4 cxb4 3.Bb2

B20

Santasiere Wing Gambit, Sicilian

1.e4 c5 2.b4 cxb4 3.c4

B20

Bowlder Attack, Sicilian

1.e4 c5 2.Bc4

B20

Slow Sicilian

1.e4 c5 2.Be2

B20

Staunton-Cochrane Variation, Sicilian

1.e4 c5 2.c4 

B20

Gloria Variation, Sicilian

1.e4 c5 2.c4 d6 3.Nc3 Nc6 4.g3 h5

B20

Chameleon Variation, Sicilian

1.e4 c5 2.d3

B20

Big Clamp Variation, Sicilian

1.e4 c5 2.d3 Nc6 3.c3 d6 4.f4

B20

Sicilian Center Game

1.e4 c5 2.d4 cxd4

B20

Smith-Morra; Fleissig Gambit, Sic

1.e4 c5 2.d4 cxd4 3.c3

B20

Rivadavia Gambit, Sicilian

1.e4 c5 2.d4 cxd4 3.c3

B20

Push Variation, Smith-Morra Gambit, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 d3

B20

Dubois Variation, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 d3 4.c4

B20

Scandanavian Formation, Smith-Morra, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 d5

B20

Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3

B20

Chicago Defense, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 d6 5.Bc4 e6 6.Nf3 Nf6 7.O-O a6

B20

Taimanov Formation, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 e6 5.Bc4 a6 6.Nf3 Ne7

B20

Kan Formation, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 e6 5.Nf3 a6

B20

Fianchetto Defense, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 e6 5.Nf3 g6

B20

Classical Formation, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 a6 7.O-O Nf6

B20

Scheveningen Formation, Smith-Morra Accepted

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 e6

B20

Paulsen Formation, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6

B20

Morphy Defense Deferred, Smith-Morra Accepted

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.O-O b5 8.Bb3 Bc5

B20

Larsen Defense, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6 7.O-O Qc7 8.Qe2 Bd6

B20

Pin Defense, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 Bb4

B20

Morphy Defense, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 Bc5

B20

Sozin Formation, Smith-Morra Accepted, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 d6 7.O-O a6 8.Qe2 b5

B20

Center Formation, Smith-Morra Declined, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 e5

B20

Alapin Formation, Smith-Morra Declined, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 Nf6

B20

Wing Formation, Smith-Morra Declined, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 Qa5

B20

Halasz Gambit, Sicilian

1.e4 c5 2.d4 cxd4 3.f4

B20

Morphy Gambit, Sicilian

1.e4 c5 2.d4 cxd4 3.Nf3

B20

Andreaschek Gambit, Sicilian

1.e4 c5 2.d4 cxd4 3.Nf3 e5 4.c3

B20

Steinitz; Tartakower, Lasker-Dunne Variation, Sicilian

1.e4 c5 2.g3

B20

Myers Attack, Sicilian

1.e4 c5 2.h4

B20

King David's Opening

1.e4 c5 2.Ke2

B20

Keres; Billium Attack, Sicilian; Chameleon

1.e4 c5 2.Ne2

B20

Brick Variation, Sicilian

1.e4 c5 2.Nh3

B21

Larsen-Santasiere (McDonnell Attack) Variation, Sicilian; B21

1.e4 c5 2.f4

B21

Tal Gambit, Sicilian

1.e4 c5 2.f4 d5 3.exd5 Nf6

B22

Alapin; Sveshnikov Var, Sicilian; B22

1.e4 c5 2.c3

B22

Barmen Defense, Sicilian

1.e4 c5 2.c3 d5 3.exd5 Qxd5

B22

Sherzer Variation, Sicilian

1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 e6 5.Nf3 Nc6

B22

Stoltz Attack, Sicilian

1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.Nf3 Nc6 5.Bc4 Nb6 6.Bb3

B23

Closed; Chigorin Variation, Sicilian; B23

1.e4 c5 2.Nc3

B23

Grand Prix Variation, Sicilian

1.e4 c5 2.Nc3 d6 3.f4

B23

Marshall Gambit, Sicilian

1.e4 c5 2.Nc3 e6 3.d4 d5

B23

Korchnoi Defense, Sicilian

1.e4 c5 2.Nc3 e6 3.g3 d5

B23

Traditional Closed Sicilian

1.e4 c5 2.Nc3 Nc6

B23

Portland Attack, Sicilian

1.e4 c5 2.Nc3 Nc6 3.d3 g6 4.g4

B23

Vinken System, Sicilian; Grand Prix Attack

1.e4 c5 2.Nc3 Nc6 3.f4

B23

Schofman Variation, Sicilian

1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.Bc4 e6 6.f5

B23

Chameleon Sicilian

1.e4 c5 2.Nc3 Nc6 3.Nge2

B24

Fianchetto Variation, Sicilian Closed; B24

1.e4 c5 2.Nc3 Nc6 3.g3

B25

B25

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6

B25

Botvinnik Defense, Sicilian Closed

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e5

B25

Edge Variation, Sicilian Closed

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e5 7.Nh3 Nge7

B26

B26

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3

B27

B27

1.e4 c5 2.Nf3

B27

Polish Gambit, Sicilian

1.e4 c5 2.Nf3 b5

B27

Katalimov Variation, Sicilian

1.e4 c5 2.Nf3 b6

B27

Jalalabad Variation, Sicilian

1.e4 c5 2.Nf3 e5

B27

Brussels Gambit, Sicilian

1.e4 c5 2.Nf3 f5

B27

Double-Dutch Gambit, Sicilian

1.e4 c5 2.Nf3 f5 3.exf5 Nh6

B27

Hyperaccelerated Dragon, Sicilian

1.e4 c5 2.Nf3 g6

B27

Action Extension, Sicilian

1.e4 c5 2.Nf3 g6 3.c4 Bh6

B27

Hyperaccelerated Pterodactyl, Sic

1.e4 c5 2.Nf3 g6 3.d4 Bg7

B27

Frederico Variation, Sicilian

1.e4 c5 2.Nf3 g6 3.d4 f5

B27

Sicilian Fred

1.e4 c5 2.Nf3 g6 3.d4 f5

B27

Buecker Variation, Sicilian

1.e4 c5 2.Nf3 h6

B27

Mongoose Variation, Sicilian

1.e4 c5 2.Nf3 Qa5

B27

Althouse; Stiletto Variation, Sicilian

1.e4 c5 2.Nf3 Qa5

B27

Accelerated Paulsen, Sicilian

1.e4 c5 2.Nf3 Qc7

B27

Quinteros Variation, Sicilian

1.e4 c5 2.Nf3 Qc7

B28

O'Kelly Variation, Sicilian; B28

1.e4 c5 2.Nf3 a6

B28

Kieseritzky System, Sicilian

1.e4 c5 2.Nf3 a6 3.b3

B28

Wing Gambit, Sicilian

1.e4 c5 2.Nf3 a6 3.b4

B28

Aronin System, Sicilian

1.e4 c5 2.Nf3 a6 3.Be2

B28

Venice System, Sicilian

1.e4 c5 2.Nf3 a6 3.c3

B28

Ljubojevic Line, Sicilian

1.e4 c5 2.Nf3 a6 3.c3 b5

B28

Gambit Line, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.c3 d5 4.exd5 Nf6

B28

Steiner Line, Sicilian

1.e4 c5 2.Nf3 a6 3.c3 d6

B28

Barcza Line, Sicilian

1.e4 c5 2.Nf3 a6 3.c3 Nf6

B28

Maroczy Bind, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.c4

B28

Robatsch Line, Sicilian

1.e4 c5 2.Nf3 a6 3.c4 d6

B28

Paulsen Line, Sicilian

1.e4 c5 2.Nf3 a6 3.c4 e6

B28

Geller Line, Sicilian

1.e4 c5 2.Nf3 a6 3.c4 Nc6 4.d4 cxd4 5.Nxd4 e5

B28

Quiet System, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.d3

B28

Normal System, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.d4

B28

Cortlever Gambit, Sicilian

1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Bc4

B28

Smith-Morra Line, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.c3

B28

Taimanov Line, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Nxd4 e5

B28

Kan Line, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Nxd4 e6

B28

Zagorovsky Line, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Qxd4

B28

Reti System, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.g3

B28

Yerevan System, O'Kelly Sicilian

1.e4 c5 2.Nf3 a6 3.Nc3

B29

Nimzovich; Rubinstein Var, Sicilian; B29

1.e4 c5 2.Nf3 Nf6

B29

Advance Variation, Sicilian

1.e4 c5 2.Nf3 Nf6 3.e5

B30

Old Sicilian

1.e4 c5 2.Nf3 Nc6

B30

Rossolimo (Nezmetdinov) Variation, Sicilian; B30

1.e4 c5 2.Nf3 Nc6 3.Bb5

B31

B31

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6

B31

Gufeld Gambit, Sicilian

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 e5 6.d4

B31

Lutikov Gambit, Sicilian

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.d4

B31

Gurgenidze Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.Re1 e5 6.b4

B31

San Francisco Gambit, Sicilian

1.e4 c5 2.Nf3 Nc6 3.Bb5 Na5 4.b4

B32

B32

1.e4 c5 2.Nf3 Nc6 3.d4

B32

Nimzovich Variation, Sicilian; Nimzo-American Variation

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 d5

B32

Bourdonnais; Lowenthal Var, Sic

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5

B32

Kalashnikov Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 d6

B32

Retreat Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Nf3

B32

Godiva Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qb6

B32

Flohr Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qc7

B33

B33

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6

B33

Four Knights Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3

B33

Lasker-Pelikan Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5

B33

Pelikan Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6

B33

Chelyabinsk Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5

B33

Sveshnikov Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5 9.Bxf6 gxf6 10.Nd5 f5

B33

Bird Variation, Siclian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 Be6

B34

Accelerated Dragon; Fianchetto Var; B34

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6

B35

B35

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4

B36

Maroczy Bind, Sicilian; B36

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4

B36

Gurgenidze Variation, Sicilian

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 Nxd4 7.Qxd4 d6

B37

B37

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7

B38

B38

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3

B39

Breyer Variation, Sicilian; B39

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6 7.Nc3 Ng4

B40

French Variation, Sicilian; B40

1.e4 c5 2.Nf3 e6

B40

Wing Gambit Deferred, Sicilian

1.e4 c5 2.Nf3 e6 3.b4

B40

Kramnik Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.c4

B40

Gaw-Paw Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Qb6

B40

Kveinis Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Qb6

B41

B41

1.e4 c5 2.Nf3 e6 3.d4

B41

Accelerated Wimpy Variation, Sic

1.e4 c5 2.Nf3 e6 3.d4 cxd4

B41

Paulsen; Kan Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6

B41

Reti Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4

B41

Hedgehog Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 g6

B41

Bronstein Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Bb4 7.Bd3 Nc6

B41

Anderssen; Counterattack Var, Sic

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6

B41

Pin Variation; Sicilian CounterAttack

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4

B41

Jaffe Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.Bd3 e5

B41

Koch Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.e5

B41

Marshall Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 d5

B42

B42

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3

B42

Polugaevsky Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Bc5

B42

Swiss Cheese Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 g6

B43

B43

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3

B44

Taimanov; Bastrikov, Paulsen Variation, Sicilian; B44

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6

B44

Szen Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5

B44

Gary Gambit, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5 d6 6.c4 Nf6 7.N1c3 a6 8.Na3 d5

B45

B45

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3

B45

Paulsen Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 Bb4

B45

American Attack, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 Bb4 7.Nd6+

B45

Four Knights Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6

B45

Cobra Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Ndb5 Bc5

B46

B46

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6

B46

Taimanov Variation, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be2 Nge7

B47

Bastrikov Variation, Sicilian; B47

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7

B47

Ponomariov Gambit, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Ndb5 Qb8 7.Be3 a6 8.Bb6

B48

B48

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3

B49

B49

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Be2

B50

Modern Variation, Sicilian; B50

1.e4 c5 2.Nf3 d6

B50

Kopec System, Sicilian

1.e4 c5 2.Nf3 d6 3.Bd3

B50

Delayed Alapin, Sicilian

1.e4 c5 2.Nf3 d6 3.c3

B50

Basman-Palatnik Gambit

1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Be2 Nc6 5.d4 cxd4 6.cxd4 Nxe4

B50

Kotov Gambit, Sicilian

1.e4 c5 2.Nf3 d6 3.g3 b5

B51

Wing Gambit Deferred, Sicilian

1.e4 c5 2.Nf3 d6 3.b4

B51

Moscow Variation, Sicilian; Canal Attack; B51

1.e4 c5 2.Nf3 d6 3.Bb5+

B51

Moscow Gambit, Sicilian

1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.c3 a6 6.Bxc6 Bxc6 7.Re1 Nf6 8.d4 Bxe4 9.Bg5

B51

Dorfman Gambit, Sicilian

1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.Qe2 g6 6.e5

B52

Main Line, Canal Attack, Sicilian; B52

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 

B52

Bronstein (Haag) Gambit, Sicilian

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.c3 Nf6 7.d4

B53

B53

1.e4 c5 2.Nf3 d6 3.d4

B53

Tartakower Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.c3

B53

Chekhover Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4

B53

Zaitsev Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4 Nc6 5.Bb5 Qd7

B53

Lazy Knight Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 Nd7

B53

Cortlever Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.dxc5 Nxe4 5.cxd6

B54

B54

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4

B55

B55

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6

B55

Ginsberg Gambit, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Bc4

B55

Moscow (Prins) Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.f3

B55

Venice Attack, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.f3 e5 6.Bb5+

B56

B56

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3

B56

Kupreichik Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bd7

B56

Venice Attack, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Bb5+

B56

Classical Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6

B56

Yates Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bd3

B56

Spielmann Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Nde2

B57

Sozin; Velimirovic Attack, Sicilian; B57

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4

B57

Anti-Sozin Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 Qb6

B58

B58

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2

B58

Boleslavsky Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5

B58

Louma Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5 7.Nxc6

B58

Fianchetto Variation, Richter-Rauzer Sicilizn

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.g3

B59

B59

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5 7.Nb3

B60

Richter-Rauzer Variation, Sicilian; B60

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5

B60

Dragon Variation, Richter-Rauzer Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 g6

B61

B61

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Qd2

B62

B62

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6

B62

Margate (Vitolins) Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Bb5

B62

Podebrady Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Nb3

B62

Exchange Variation, Richter-Rauzer Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Nxc6

B63

Rauzer Variation, Sicilian; B63

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2

B63

Ivanov Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Qb6

B64

B64

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.f4

B65

B65

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.f4 Nxd4 10.Qxd4

B66

B66

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6

B67

B67

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7

B68

B68

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f4 Be7

B69

B69

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f4 Be7 10.Nf3 b5 11.Bxf6

B70

Dragon Variation, Sicilian; B70

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6

B70

Alekhine Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.O-O O-O 8.Nb3

B70

Fianchetto Variation, Sicilian Dragon

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.g3

B71

Levenfish Variation, Sicilian; B71

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4

B72

B72

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3

B72

Nottingham Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Nb3

B72

Amsterdam (Battery) Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Qd2

B72

Grigoriev Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Qd2 O-O 9.O-O-O

B73

B73

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O

B73

Zollner Gambit, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.f4 Qb6

B74

B74

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.Nb3

B74

Alekhine Line, Sicilian Dragon

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.Nb3 a5

B74

Maroczy Line, Sicilian Dragon

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.Nb3 Be6 10.f4 Na5

B74

Tartakower Line, Sicilian Dragon

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.Nb3 Be6 10.f4 Qc8

B75

B75

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3

B76

Yugoslav Attack, Sicilian Dragon; B76

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O

B76

Panov Variation, Sicilian Dragon

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.g4

B77

B77

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4

B77

Sosonko Variation, Sicilian Dragon

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Nd7

B77

Czerniak Variation, Sicilian Dragon

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Nxd4 10.Bxe4

B78

B78

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Bd7 10.O-O-O

B79

B79

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Bd7 10.O-O-O Qa5

B80

Scheveingen Variation, Sicilian; B80

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6

B80

Vitolins Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bb5+

B80

English Attack, Scheveningen Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.f3

B80

Fianchetto Variation, Scheveningen Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g3

B81

Delayed Keres Attack, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.g4

B81

Perenyi Gambit, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.g4 e5 8.Nf5 g6 9.g5

B81

Keres; Panov Variation, Sicilian; B81

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g4

B82

Matanovic Attack, Sicilian; B82

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.f4

B82

Tal Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.f4 Nc6 7.Be3 Be7 8.Qf3

B83

Scheveningen Variation, Sicilian; B83

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 

B84

Modern Paulsen, Sicilian; B84

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6

B85

B85

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Be7

B85

Paulsen Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6

B86

Fischer Attack, Sozin Attack, Sicilian; B86

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4

B87

Flank Variation, Sicilian; B87

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 b5

B88

Leonhardt Variation, Sicilian; B88

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6

B89

B89

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3 

B89

Sherbakov Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3 Be7 8.Bb3 O-O 9.O-O Na5 10.f4 b6

B89

Velimirovic Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3 Be7 8.Qe2

B90

Najdorf Variation, Sicilian; B90

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6

B90

Lipnitzky Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4

B90

Byrne Variation, Sicilian; English Attack

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3

B90

Anti-English, Najdorf Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 Ng4

B90

Adams Attack, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3

B90

Freak Attack, Siicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Rg1

B91

Zagreb Variation, Sicilian; B91

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3

B92

Opocensky Variation, Sicilian; B92

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2

B92

Opocensky Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5

B93

Amsterdam Variation, Sicilian; B93

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4

B94

B94

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5

B95

B95

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6

B96

B96

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4

B96

Polugaevsky; Accelerated Najdorf

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5

B96

Simagin Line, Najdorf Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5 8.e5 dxe5 9.fxe5 Qc7 10.Qe2

B97

Poisoned Pawn Variation, Najdorf Sicilian; B97

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6

B97

Poisoned Pawn Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2

B97

Poisoned Pawn Accepted, Najdorf Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 Qxb2

B98

B98

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7

B98

Argenitne; Goteborg Var, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 h6 9.Bh4 g5

B98

Browne Variation, Najdorf Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 h6 9.Bh4 Qc7

B99

B99

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7

C00

Franco-Sicilian Defense

1.d4 e6 2.c4 c5 

C00

French Defense; C00

1.e4 e6

C00

Reti (Horwitz) Variation, French

1.e4 e6 2.b3

C00

Papa-Ticulat Gambit, French

1.e4 e6 2.b3 d5 3.Bb2

C00

Banzai-Leong Gambit, French

1.e4 e6 2.b4

C00

Pinova Gambit

1.e4 e6 2.b4 Bxb4 3.e5

C00

Bird Invitation, French

1.e4 e6 2.Bb5

C00

Orthoschapp Variation, French

1.e4 e6 2.c4 d5 3.cxd5 exd5 4.Qb3

C00

King"s Indian Attack

1.e4 e6 2.d3 

C00

Reversed Philidor, French

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.Ngf3 Nc6 5.Be2

C00

Franco-Hiva Gambit, French

1.e4 e6 2.d3 f5

C00

Alapin; Witaker Gambit, French

1.e4 e6 2.d4 d5 3.Be3

C00

Alapin-Diemer Gambit, French

1.e4 e6 2.d4 d5 3.Be3 dxe4 4.f3

C00

Diemer-Duhm Gambit, French

1.e4 e6 2.d4 d5 3.c4

C00

Steinitz Attack, French

1.e4 e6 2.e5

C00

Bourdonnais (La Bourdonnais) Variation, French

1.e4 e6 2.f4 

C00

Reuter Gambit, French

1.e4 e6 2.f4 d5 3.Nf3 dxe4 4.Ng5

C00

Reti-Spielmann Attack, French

1.e4 e6 2.g3

C00

Queen's Knight, French

1.e4 e6 2.Nc3

C00

Pelikan Variation, French

1.e4 e6 2.Nc3 d5 3.f4

C00

Two Knight Variation, French

1.e4 e6 2.Nc3 d5 3.Nf3

C00

Knight Variation, French

1.e4 e6 2.Nf3

C00

Wing Gambit, French

1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4

C00

Two Knights Variation, French

1.e4 e6 2.Nf3 d5 3.Nc3

C00

Chigorin Variation, French

1.e4 e6 2.Qe2

C01

C01

1.e4 e6 2.d4

C01

Baeuerle Gambit, French

1.e4 e6 2.d4 b5

C01

Schlechter Variation, French

1.e4 e6 2.d4 d5 3.Bd3

C01

Exchange Variation, French

1.e4 e6 2.d4 d5 3.exd5 exd5

C01

Monte Carlo Variation, French

1.e4 e6 2.d4 d5 3.exd5 exd5 4.c4

C01

Svenius Variation, French

1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nc3 Nf6 5.Bg5

C01

Canal Attack, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.exd5 exd5 5.Bd3 Ne7 6.Qh5

C01

Perseus Gambit, French

1.e4 e6 2.d4 d5 3.Nf3

C01

Carlson Gambit, French

1.e4 e6 2.d4 d5 3.Nf3 dxe4 4.Ne5

C01

Morphy Gambit, French

1.e4 e6 2.d4 d5 3.Nh3

C01

Hoffman Gambit

1.e4 e6 2.d4 d5 3.Qe2 e5 4.f4 exf4

C01

Franco-Hiva Gambit I, French

1.e4 e6 2.d4 f5

C01

Mediterranean Defense, French

1.e4 e6 2.d4 Nf6

C02

Advance Variation, French; C02

1.e4 e6 2.d4 d5 3.e5

C02

Extended Bishop Swap, French

1.e4 e6 2.d4 d5 3.e5 Bd7

C02

Advance; Nimzovich; Steinitz Var, Fr

1.e4 e6 2.d4 d5 3.e5 Bd7

C02

Frenkel Gambit, French

1.e4 e6 2.d4 d5 3.e5 c5 4.b4

C02

Paulsen Attack, French

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3

C02

Euwe Variation, French

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7

C02

Lputian Variation, French

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.a3 Nh6

C02

Milner-Barry Gambit, French

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3

C02

Milner-Barry Gambit, French

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3 cxd3 7.cxd3 Bd7 8.O-O Nxd4 9.Nxd4

C02

Wade Variation, French

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qb6 5.Nf3 Bd7

C02

Nimzovich Variation, French

1.e4 e6 2.d4 d5 3.e5 c5 4.Nf3

C02

Ruisdonk Gambit, French

1.e4 e6 2.d4 d5 3.e5 c5 4.Nf3 cxd4 5.Bd3

C02

Nimzovich Attack, French

1.e4 e6 2.d4 d5 3.e5 c5 4.Qg4

C03

Tarrasch Variation, French; C03

1.e4 e6 2.d4 d5 3.Nd2

C03

Morozevich Variation, French

1.e4 e6 2.d4 d5 3.Nd2 Be7

C03

Haberditz Variation, French

1.e4 e6 2.d4 d5 3.Nd2 f5

C04

C04

1.e4 e6 2.d4 d5 3.Nd2 Nc6

C04

Guimard Variation, French

1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.Ngf3 Nf6 5.e5 Nfd7

C04

Leningrad Variation, French

1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.Ngf3 Nf6 5.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Ndf3 cxd4 8.cxd4

C05

C05

1.e4 e6 2.d4 d5 3.Nd2 Nf6

C06

Botvinnik Variation, French

1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.e4 Nfd7 5.Bd3 c5 6.c3 b6

C06

C06

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3

C07

Open System Tarrasch French; C07

1.e4 e6 2.d4 d5 3.Nd2 c5

C07

Shaposhnikov Gambit, French

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Nf6

C07

Chistiakov Defense, French

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5

C08

C08

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5

C09

C09

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6

C10

Normal Variation, French; C10

1.e4 e6 2.d4 d5 3.Nc3

C10

Marshall Variation, French

1.e4 e6 2.d4 d5 3.Nc3 c5

C10

Rubinstein Variation, French

1.e4 e6 2.d4 d5 3.Nc3 dxe4

C10

Fort Knox Variation, French

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Bd7 5.Nf3 Bc6

C10

Rasa-Studier Gambit, French

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Be3

C10

Ellis Gambit, French

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 e5

C10

Blackburne Defense, French

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7

C10

Capablanca Line, French

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6 7.Ne5

C10

Frere; Becker; Katilimov, Maric Var, French

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Qd5

C10

Svenonius Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.exd5

C11

Classical Variation, French; C11

1.e4 e6 2.d4 d5 3.Nc3 Nf6

C11

Swiss Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bd3

C11

Henneberger Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Be3

C11

Burn Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4

C11

Steinitz Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5

C11

Bradford Attack, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.dxc5 Bxc5 7.Qg4

C11

Brodsky-Jones Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.dxc5 Nc6 7.a3 Bxc5 8.Qg4 O-O 9.Nf3 f6

C11

Boleslavsky Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3

C11

Gledhill Attack, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.Qg4

C12

C12

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5

C12

McCutcheon Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4

C12

Olland (Dutch) Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bc1

C12

Lasker Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3

C12

Duras Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3 Ne4 8.Qg4 Kf8 9.Bc1

C12

Tartakower Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Nfd7

C12

Janowski Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Be3

C12

Bernstein Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bh4

C12

Chigorin Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.exf6

C12

Grigoriev Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.exf6 hxg5 7.fxg7 Rg8 8.h4 gxh4 9.Qg4

C12

Wolf Gambit, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.Nge2

C13

Vistaneckis (Nimzovich) Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Ng8

C13

Frankfurt Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Ng8 6.Be3 b6

C13

C13

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4

C14

C14

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7

C14

Anderssen (Richter) Attack, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6

C14

Tartakower Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Ne4

C14

Classical Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7

C14

Tarrasch Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Bd3

C14

Steinitz Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4

C14

Alapin Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Nb5

C14

Rubinstein Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Qd2

C14

Pollock Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Qg4

C14

Chatard-Alekhine; Albin Attack, Fr

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4

C14

Maroczy Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 a6

C14

Albin-Chatard Gambit, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 Bxg5 7.hxg5 Qxg5

C14

Breyer Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 c5

C14

Teichmann Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 f6

C14

Spielmann Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 O-O

C15

Winawer Variation, French; C15

1.e4 e6 2.d4 d5 3.Nc3 Bb4 

C15

Winckelmann-Riemer Gambit, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.a3

C15

Fingerslip Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd2

C15

Kunin Double Gambit, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd2 dxe4 5.Qg4 Qxd4

C15

Schwarz's Line, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd2 Ne7 5.Nb1

C15

Kondratiyev Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd3 c5 5.exd5 Qxd5 6.Bd2

C15

Delayed Exchange Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.exd5

C15

Alekhine (Maroczy) Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Ne2

C15

Kan Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Ne2 dxe4 5.a3 Bxc3+ 6.Nxc3 Nc6

C16

C16

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5

C16

Petrosian Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Qd7

C17

C17

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5

C17

Bogoljubow Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Bd2

C17

Icelandic Defense, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Bd2 Ne7 6.f4

C17

Moscow Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Qg4

C18

C18

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 

C18

Swiss (Retreat) Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Ba5

C18

Armenian Line, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Ba5 6.b4 cxd4

C18

Maroczy-Willis Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 cxd4 6.axb4 dxc3

C19

C19

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7

C19

Poisoned Pawn Variation, French Winawer

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4

C20

King Pawn Game; C20

1.e4 e5

C20

Mengarini Opening

1.e4 e5 2.a3

C20

Portuguese Opening

1.e4 e5 2.Bb5

C20

Miguel Gambit

1.e4 e5 2.Bb5 Bc5 3.b4

C20

Tortoise Opening

1.e4 e5 2.Bd3

C20

Macleod Attack

1.e4 e5 2.c3

C20

Norwalder Gambit

1.e4 e5 2.c3 d5 3.Qh5 Bd6

C20

Lasa Gambit

1.e4 e5 2.c3 f5

C20

Whale Opening

1.e4 e5 2.c4

C20

Bavarian Gambit

1.e4 e5 2.c4 d5

C20

Clam Variation; Leonardis Variation

1.e4 e5 2.d3

C20

Indian Opening

1.e4 e5 2.d3

C20

Weber Gambit

1.e4 e5 2.d3 d5 3.exd5 c6 4.dxc6 Nxc6

C20

King's Gambit Reversed

1.e4 e5 2.d3 f5

C20

Radisch Gambit

1.e4 e5 2.d3 Nf6 3.f4 Bc5

C20

King's Head

1.e4 e5 2.f3 

C20

Walkerling

1.e4 e5 2.f3 Nf6 

C20

Krejcik Gambit

1.e4 e5 2.f3 Nf6 3.Bc4 Bc5 4.Ne2 Nc6 5.b4

C20

King's Head Opening

1.e4 e5 2.f3 Nf6 3.Nc3

C20

Alapin Opening

1.e4 e5 2.Ne2

C20

Napoleon Attack

1.e4 e5 2.Qf3

C20

Wayward Queen; Danvers; Parnham

1.e4 e5 2.Qh5

C20

Mellon Gambit

1.e4 e5 2.Qh5 Nc6 3.Bc4 Nh6 4.d3 g6 5.Qf3 f6 6.Ne2 d5

C20

Kiddie Countergambit

1.e4 e5 2.Qh5 Nf6

C21

Center Game; C21

1.e4 e5 2.d4 

C21

Beyer Gambit

1.e4 e5 2.d4 d5

C21

Philidor Gambit

1.e4 e5 2.d4 d6 3.dxe5 Bd7

C21

Center Game Accepted

1.e4 e5 2.d4 exd4

C21

Von der Lasa Gambit

1.e4 e5 2.d4 exd4 3.Bc4

C21

Ross Gambit, Center

1.e4 e5 2.d4 exd4 3.Bd3

C21

Danish Gambit

1.e4 e5 2.d4 exd4 3.c3

C21

Sorensen Defense, Center

1.e4 e5 2.d4 exd4 3.c3 d5

C21

Danish Gambit Accepted

1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2

C21

Copenhagen Defense, Danish Gambit

1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 Bb4+

C21

Schlechter Defense, Center

1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 d5

C21

Classical Defense, Danish Gambit

1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 Nf6

C21

Chigorin Defense, Danish Gambit

1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 Qe7

C21

Svenonius Defense, Center

1.e4 e5 2.d4 exd4 3.c3 Ne7

C21

Halasz-McDonnell Gambit

1.e4 e5 2.d4 exd4 3.f4

C21

Crocodile Variation, Center Game

1.e4 e5 2.d4 exd4 3.f4 Bc5 4.Nf3 Nc6 5.c3

C21

Lanc-Arnold Gambit, Center

1.e4 e5 2.d4 exd4 3.Nf3 Bc5 4.c3

C21

Scippler Gambit, Center

1.e4 e5 2.d4 exd4 3.Nf3 Bc5 4.c3 dxc3 5.Bc4

C22

C22

1.e4 e5 2.d4 exd4 3.Qxd4

C22

Hall Variation, Center

1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qc4

C22

Paulsen Attack Variation, Center

1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 

C22

Berger Variation, Center

1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6 

C22

Kupreichik Variation, Center

1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6 5.Nc3 Bb4 6.Bd2 O-O 7.O-O-O Re8 8.Bc4

C23

Bishop's Opening; C23

1.e4 e5 2.Bc4

C23

Anderssen Gambit

1.e4 e5 2.Bc4 b5 3.Bxb5 c6

C23

Thorold Gambit

1.e4 e5 2.Bc4 b5 3.Bxb5 f5

C23

Classical Variation, Bishop; Boi Variation

1.e4 e5 2.Bc4 Bc5 

C23

MacDonnell Gambit, Bishop

1.e4 e5 2.Bc4 Bc5 3.b4

C23

Labourdonnais-Denker Gambit, Bishop

1.e4 e5 2.Bc4 Bc5 3.b4 Bxb4 4.c3

C23

McDonnell Double Gambit, Bishop

1.e4 e5 2.Bc4 Bc5 3.b4 Bxb4 4.f4

C23

Philidor Variation, Bishop

1.e4 e5 2.Bc4 Bc5 3.c3

C23

Lewis Counter-Gambit, Bishop

1.e4 e5 2.Bc4 Bc5 3.c3 d5

C23

Lewis Countergambit, Bishop

1.e4 e5 2.Bc4 Bc5 3.c3 d5 4.Bxd5 Nf6

C23

Walker Variation, Bishop

1.e4 e5 2.Bc4 Bc5 3.c3 d5 4.Bxd5 Nf6 5.d4

C23

Lewis Gambit, Bishop

1.e4 e5 2.Bc4 Bc5 3.d4

C23

Stein Gambit, Bishop

1.e4 e5 2.Bc4 Bc5 3.f4

C23

Lopez Variation, Bishop

1.e4 e5 2.Bc4 Bc5 3.Qe2

C23

Lopez Gambit, Bishop

1.e4 e5 2.Bc4 Bc5 3.Qe2 Nf6 4.f4

C23

Khan Gambit, Bishop

1.e4 e5 2.Bc4 d5

C23

King's Gambit Reversed, Bishop

1.e4 e5 2.Bc4 f5

C23

Calabrese Counter-Gambit

1.e4 e5 2.Bc4 f5

C23

Kreijcik Gambit, Bishop

1.e4 e5 2.Bc4 Nf6 3.f3 Bc5 4.Ne2 Nc6 5.b4

C23

Greco Gambit, Bishop

1.e4 e5 2.Bc4 Nf6 3.f4

C23

Horwitz Gambit, Bishop

1.e4 e5 2.Bc4 Nf6 3.Nc3 b5

C23

Blanel Gambit, Bishop

1.e4 e5 2.Bc4 Nf6 3.Nc3 Nxe4

C23

Paschmann Gambit, Bishop

1.e4 e5 2.Bc4 Nf6 3.Ne2 Nxe4 4.Nec3

C23

Meitner-Mieses Gambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.Bc4 Bc5 4.Qg4 Qf6 5.Nd5

C23

Bronstein Gambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.Bc4 Nf6 4.f4 Nxe4 5.Nf3

C24

Berlin Defense, Bishop; C24

1.e4 e5 2.Bc4 Nf6 

C24

Spielmann Attack, Bishop

1.e4 e5 2.Bc4 Nf6 3.d3 Bc5 4.Nc3

C24

Kitchner Folly, Bishop

1.e4 e5 2.Bc4 Nf6 3.d3 Be7 4.Nf3 O-O

C24

Vienna Hybrid, Bishop

1.e4 e5 2.Bc4 Nf6 3.d3 Nc6 4.Nc3

C24

Hromadka Variation, Bishop

1.e4 e5 2.Bc4 Nf6 3.d3 Nc6 4.Nc3 Bb4 5.Ne2

C24

Ponziani Center Gambit, Bishop

1.e4 e5 2.Bc4 Nf6 3.d4

C24

Warsaw Gambit, Bishop

1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.c3

C24

Urusov; Ouroussoff; Keidansky G

1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3

C24

Keidansky Gambit, Bishop

1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 Nxe4 5.Qxd4

C25

Vienna; Hamppe Opening; C25

1.e4 e5 2.Nc3 

C25

Zhuravlev Counter-Gambit, Vienna

1.e4 e5 2.Nc3 Bb4 3.Qg4

C25

Zhuraviev Countergambit, Vienna

1.e4 e5 2.Nc3 Bb4 3.Qg4 Nf6

C25

Anderssen Defense, Vienna

1.e4 e5 2.Nc3 Bc5

C25

Hamppe-Mietner Variation, Vienna

1.e4 e5 2.Nc3 Bc5 3.Na4

C25

Giraffe Attack, Vienna

1.e4 e5 2.Nc3 Bc5 3.Qg4

C25

Omaha Gambit, Vienna

1.e4 e5 2.Nc3 d6 3.f4

C25

Fyfe Gambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.d4

C25

Philidor Countergambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.d4 f5

C25

Alapin Variation, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4

C25

Vienna Gambit

1.e4 e5 2.Nc3 Nc6 3.f4

C25

Quelle Gambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 Bc5 4.fxe5 d6

C25

Steinitz Gambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4

C25

Fraser-Minckwitz Variation, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 b6

C25

Zukertort Defense, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 d5

C25

Paulsen Defense, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 d6

C25

Soerensen Defense, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 g5

C25

Knight Variation, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3

C25

Cunningham Defense, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 Be7

C25

Hamppe-Muzio Gambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.Bc4 g4 6.O-O

C25

Pierce Gambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.d4

C25

Hamppe-Allgaier Gambit, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.h4 g4 6.Ng5

C25

Hamppe-Allgaier-Thorold Gambit

1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.h4 g4 6.Ng5 h6 7.Nxf7 Kxf7 8.d4

C25

Paulsen Variation, Vienna

1.e4 e5 2.Nc3 Nc6 3.g3

C25

Mariotti Gambit

1.e4 e5 2.Nc3 Nc6 3.g3 Bc5 4.Bg2 h5 5.Nf3 h4

C25

Polluck Gambit, Vienna

1.e4 e5 2.Nc3 Nf6 3.g3 Bc5 4.Bg2 Nc6 5.Nge2 d5 6.exd5

C25

Erben Gambit, Vienna

1.e4 e5 2.Nc3 Nf6 3.g3 d5 4.exd5 c6

C25

Hamppe Meitner, Vienna

1.e4 e5 2.Nf3 Bc5 3.Na4

C26

Falkbeer Variation, Vienna; C26

1.e4 e5 2.Nc3 Nf6

C26

Mengarini Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.a3

C26

Oxford Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.d3

C26

Mieses Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.g3

C27

Stanley Variation, Vienna; C27

1.e4 e5 2.Nc3 Nf6 3.Bc4

C27

Reversed Spanish, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Bb4

C27

Bishop Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Bc5

C27

Eifel Gambit, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Bc5 4.Nge2 b5

C27

Modern Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4

C27

Boden-Kieseritzky Gambit, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Nf3

C27

Monster Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Be7

C27

Alekhine Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Be7 6.Nf3 Nc6 7.Nxe5

C27

Adams Gambit, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Nc6 6.d4

C27

Frankenstein-Dracula Var, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Nc6 6.Nb5 g6 7.Qf3 f5 8.Qd5 Qe7

C28

Three Knights Variation, Vienna; C28

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6

C29

Vienna Gambit, Vienna; C29

1.e4 e5 2.Nc3 Nf6 3.f4

C29

Steinitz Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.d3

C29

Wurzburger Trap, Vienna

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.d3 Qh4 6.g3 Nxg3 7.Nf3 Qh5 8.Nd5 Bxd5 9.Nf4

C29

Breyer Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Be7

C29

Kaufmann Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Bg4 6.Qe2

C29

Paulsen Attack, Vienna

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3

C29

Bardeleben Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3 f5

C30

King's Gambit; C30

1.e4 e5 2.f4

C30

Classical Defense, KGD

1.e4 e5 2.f4 Bc5 

C30

Heath Variation, KGD; Rotlewi Countergambit

1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.b4

C30

Marshall (Euwe) Attack, KGD

1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 Bg4 5.fxe5 dxe5 6.Qa4+

C30

Rubinstein Countergambit, KGD

1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3 f5

C30

Svenonius Variation, KGD

1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.Nc3 Nf6 5.Bc4 Nc6 6.d3 Bg4

C30

Senechaud Counter-Gambit, KGD

1.e4 e5 2.f4 Bc5 3.Nf3 g5

C30

Mafia Defense, KGD

1.e4 e5 2.f4 c5

C30

Panteldakis Countergambit, KGD

1.e4 e5 2.f4 f5

C30

Soller-Zilbermints Gambit, KGD

1.e4 e5 2.f4 f6 3.fxe5 Nc6

C30

Zilbermints Double Countergambit; KGD

1.e4 e5 2.f4 g5

C30

Queen's Knight Defense, KGD

1.e4 e5 2.f4 Nc6

C30

Miles Defense, KGD

1.e4 e5 2.f4 Nc6 3.Nf3 f5

C30

Zilbermints Double Gambit I, KGD

1.e4 e5 2.f4 Nc6 3.Nf3 g5

C30

Petrov's Defense, KGD

1.e4 e5 2.f4 Nf6

C30

Norwalde (Norwalder) Variation, KGD

1.e4 e5 2.f4 Qf6

C30

Schubert Variation, KGD

1.e4 e5 2.f4 Qf6 3.Nc3 Qxf4 4.d4

C30

Keene Defense, KGD

1.e4 e5 2.f4 Qh4+ 3.g3 Qe7

C31

Falkbeer Counter-Gambit, KGD; C31

1.e4 e5 2.f4 d5 

C31

Hinrichsen Gambit, KGD

1.e4 e5 2.f4 d5 3.d4

C31

Falkbeer Countergambit Accepted, KGD

1.e4 e5 2.f4 d5 3.exd5

C31

Miles Gambit, KGD

1.e4 e5 2.f4 d5 3.exd5 Bc5

C31

Nimzovich-Marshall Variation, KGD

1.e4 e5 2.f4 d5 3.exd5 c6

C31

Marshall C-G, KGD

1.e4 e5 2.f4 d5 3.exd5 c6

C31

Pickler Gambit, KGD

1.e4 e5 2.f4 d5 3.exd5 c6 4.dxc6 Bc5

C31

Nimzovich Variation, KGD; Anderssen Attack

1.e4 e5 2.f4 d5 3.exd5 e4 4.Bb5+

C31

Blackbunre Attack, KGD

1.e4 e5 2.f4 d5 3.Nf3

C32

Staunton Line, KGD; C32

1.e4 e5 2.f4 d5 3.exd5 e4

C32

Reti (Charousek) Variation, KGD

1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 

C32

Morphy Defense, KGD

1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Nc3 Bb4 6.Bd2 e3

C32

Keres Variation, KGD

1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Nd2

C32

Old Line, Falkbeer Countergambit, KGD

1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Qe2

C32

Modern Transfer, Falkbeer Countergambit, KGD

1.e4 e5 2.f4 d5 3.exd5 exf4

C33

King's Gambit Accepted; C33

1.e4 e5 2.f4 exf4

C33

Orsini Gambit, KGA

1.e4 e5 2.f4 exf4 3.b3

C33

Schurig Gambit, KGA

1.e4 e5 2.f4 exf4 3.Bb5

C33

Bishop's Gambit, KGA

1.e4 e5 2.f4 exf4 3.Bc4

C33

Kieseritzky Gambit, Bishop's Gambit, KGA

1.e4 e5 2.f4 exf4 3.Bc4 b5

C33

Lopez Defense, KGA

1.e4 e5 2.f4 exf4 3.Bc4 c6

C33

Bledow; Morphy Defense, KGA

1.e4 e5 2.f4 exf4 3.Bc4 d5

C33

Bledow Countergambit, KGA

1.e4 e5 2.f4 exf4 3.Bc4 d5 4.Bxd5 Nf6

C33

Gianutio Counter-Gambit, KGA

1.e4 e5 2.f4 exf4 3.Bc4 f5

C33

Anderssen Defense, KGA

1.e4 e5 2.f4 exf4 3.Bc4 g5

C33

Maurian Defense, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Nc6

C33

Cozio; Hanneken; Prussian; Lichtenhein

1.e4 e5 2.f4 exf4 3.Bc4 Nf6

C33

Bogoljubow Variation, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Nf6 4.Nc3

C33

Bogoljubov; Jaenisch Variation, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Nf6 4.Nc3 c6

C33

Bryan; Kieseritzky Gambit, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 b5

C33

Greco Variation, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 Bc5

C33

Cozio Variation, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 d6

C33

Classical Defense, KGA; Lopez Variation

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5

C33

Grimm Attack, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.d4 d6 7.e5

C33

MacDonnell Attack, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.d4 Ne7 7.g3

C33

McDonnell Attack, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.g3 

C33

Fraser Variation, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Nc3 Bg7 6.g3 fxg3 7.Qf3

C33

Cozio Attack, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 g5 5.Qf3

C33

Boden Variation, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 Nc6

C33

Jaenisch Variation, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 Nf6

C33

Jaenisch Variation, KGA

1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 Qf6

C33

Lesser Bishop; Tartakower

1.e4 e5 2.f4 exf4 3.Be2

C33

Weiss Defense, KGA

1.e4 e5 2.f4 exf4 3.Be2 f5 4.exf5 d6

C33

Central; Polerio; Willemson, Steinitz

1.e4 e5 2.f4 exf4 3.d4

C33

Gaga Gambit, KGA

1.e4 e5 2.f4 exf4 3.g3

C33

Gama Gambit, KGA

1.e4 e5 2.f4 exf4 3.g3 fxg3 4.Nf3

C33

Leonardo (Stamma) Gambit, KGA

1.e4 e5 2.f4 exf4 3.h4

C33

Drunken King, KGA

1.e4 e5 2.f4 exf4 3.Kf2

C33

Tumbleweed; King's Own, KGA

1.e4 e5 2.f4 exf4 3.Kf2

C33

Keres, Mason, Parnu, Requena

1.e4 e5 2.f4 exf4 3.Nc3

C33

Requena Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nc3 Qh4+

C33

Paris Gambit, KGA

1.e4 e5 2.f4 exf4 3.Ne2

C33

Eisenberg Variation, KGA

1.e4 e5 2.f4 exf4 3.Nh3

C33

Basman Gambit, KGA

1.e4 e5 2.f4 exf4 3.Qe2

C33

Bilguer-Mirage Variation, KGA

1.e4 e5 2.f4 exf4 3.Qe2

C33

Breyer; Hungarian; Carrera, KGA

1.e4 e5 2.f4 exf4 3.Qf3

C33

Dodo Gambit, KGA

1.e4 e5 2.f4 exf4 3.Qg4

C33

Carrera Gambit, KGA

1.e4 e5 2.f4 exf4 3.Qh5

C34

King's Knight Gambit, KGA; C34

1.e4 e5 2.f4 exf4 3.Nf3

C34

Fischer Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 d6

C34

Schulder Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 d6 4.b4

C34

Gianutio Countergambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 f5

C34

Becker; Anti-Kieseritzky Var, KGA

1.e4 e5 2.f4 exf4 3.Nf3 h6

C34

MacLeod Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 Nc6

C34

Bonsch-Osmolovsky Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 Ne7

C34

Schallop Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 Nf6

C34

Tashkent Attack, KGA

1.e4 e5 2.f4 exf4 3.Nf3 Nf6 4.e5 Nh5 5.g4

C35

Cunningham Gambit, KGA; C35

1.e4 e5 2.f4 exf4 3.Nf3 Be7

C35

Wild Cunningham Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.Bc4 Bh4+ 

C35

Bertin; Three Pawns Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.Bc4 Bh4+ 5.g3

C35

Neo-Cunningham Gambit, KGA; McCormick Defense

1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.Bc4 Nf6

C36

Scandinavian Variation, KGA; Modern Defense, KGA; C36

1.e4 e5 2.f4 exf4 3.Nf3 d5

C36

Abbazia Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 d5 4.exd5 Nf6

C37

C37

1.e4 e5 2.f4 exf4 3.Nf3 g5

C37

Ghulam Kassim; Koch Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4

C37

Middleton Counter-Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 d6 5.O-O Bg4 6.h3 h5 7.hxg4

C37

Greco-Lolli; Wild Muzio Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Bxf7+

C37

Young Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Bxf7+ Kxf7 6.O-O gxf3 7.Qxf3 Qf6 8.d4 Qxd4+ 9.Be3

C37

Koch; Ghulam Kassim Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.d4

C37

Kotov Gambit

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.d4 gxf3 6.Bxf4

C37

Ghulam-Kassim Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.d4 gxf3 6.Qxf3

C37

Australian Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.h4

C37

MacDonnell Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Nc3

C37

Salvio Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 

C37

Cochrane Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5  Qh4+ 6.Kf1 f3

C37

Herzfeld; Portuguese; Vienna, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5  Qh4+ 6.Kf1 Nc6

C37

Santa Maria Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5  Qh4+ 6.Kf1 Nf6

C37

Silberschmidt Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5  Qh4+ 6.Kf1 Nh6

C37

Anderssen Counter-Attack, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nh6 7.d4 d6

C37

Muzio-Polerio Gambit, KGA; Wild Muzio

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O

C37

Brentano Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O d5

C37

Holloway Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Nc6

C37

From Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qe7

C37

Sarratt Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6

C37

Young Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.Bxf7+ Kxf7 8.d4 Qxd4+ 9.Be3 Qf6

C37

Double Muzio Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.e5 Qxe5 8.Bxf7+

C37

Paulsen Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.e5 Qxe5 8.d3 Bh6 9.Nc3 Ne7 10.Bd2

C37

Bello Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.Nc3

C37

Baldwin Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O gxf3 6.Qxf3 Qf6 7.Nc3 Qd4+ 8.Kh1 Qxc4 9.Nd5

C37

Kling & Horwitz Counter-Attack, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.O-O Qe7

C37

Blachy Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Nc6

C37

Rosentreter Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4

C37

Soerensen Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 Bg4 5.Nc3

C37

Sorensen Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 Bg4 5.Ne5

C37

Bird Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 Bg4 5.Ne5 Qh4+ 6.g3

C37

Rosentreter-Testa Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.d4 g4 5.Bxf4

C37

Quaade; Taylor Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Nc3

C38

Traditional Variation, KGA; C38

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7

C38

Mayet Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.d4 d6 6.c3

C38

Philidor Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.h4

C38

Greco Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.h4 h6 6.d4 d6

C38

Greco; Calabrian Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.h4 h6 6.d4 d6 7.hxg5 hxg5 8.Rxh8 Rxh8 9.Nc3

C38

Schultz Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.h4 h6 6.d4 d6 7.Qd3

C38

Hanstein Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.O-O

C39

C39

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4

C39

Kieseritzky Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5

C39

Paulsen Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Bg7

C39

Campbell; Brentano; Morphy Var, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 d5

C39

Green; Kolisch Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 d6

C39

Long Whip Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 h5

C39

Cotter Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 h6 6.Nxf7

C39

Neumann Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nc6

C39

Berlin Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6

C39

Anderssen Defense, Kieseritsky Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 d5 7.exd5 Bd6

C39

Anderssen-Cordel Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 d5 7.exd5 Bd6 8.d4 Nh5 9.Bxf4 Nxf4

C39

Rice Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 d5 7.exd5 Bd6 8.O-O

C39

Rice Gambit Accepted, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 d5 7.exd5 Bd6 8.O-O Bxe5

C39

Paulsen Defense Deferred, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 d5 7.exd5 Bg7

C39

Rubinstein Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.d4

C39

Riviere Variation, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Nxg4 d5

C39

Rosenthal; Stockwhip Var, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Qe7

C39

Allgaier; Cotter Cambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5

C39

Walker (Urusov) Attack, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.Bc4+

C39

Urusov Attack, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.Bc4+ d5 8.Bxd5+ Ke8 9.d4

C39

Thorold Attack, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.d4

C39

Horny Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5 h6 6.Nxf7 Kxf7 7.Qxg4 Nf6 8.Qxf4

C40

King's Knight Opening; C40

1.e4 e5 2.Nf3

C40

Glatz Gambit; Busch-Gass Gambit

1.e4 e5 2.Nf3 Bc5

C40

Chiodini Gambit

1.e4 e5 2.Nf3 Bc5 3.Nxe5 Nc6

C40

Jalalabad Defense

1.e4 e5 2.Nf3 c5

C40

Gunderam Gambit

1.e4 e5 2.Nf3 c6

C40

Queen's Pawn Counter-Gambit; Elephant Gambit

1.e4 e5 2.Nf3 d5

C40

Maroczy; Elephant Gambit

1.e4 e5 2.Nf3 d5 3.exd5 Bd6

C40

Halasz-Jacobsen Gambit

1.e4 e5 2.Nf3 d5 3.exd5 Bd6

C40

Maroczy Gambit

1.e4 e5 2.Nf3 d5 3.exd5 Bd6

C40

Paulsen Counter-Gambit

1.e4 e5 2.Nf3 d5 3.exd5 e4

C40

Wasp Variation

1.e4 e5 2.Nf3 d5 3.Nxe5 dxe4 4.Bc4 Qg5

C40

Latvian; Greco Counter-Gambit

1.e4 e5 2.Nf3 f5

C40

Senechaud Gambit, Latvian

1.e4 e5 2.Nf3 f5 3.b4

C40

Mayet Attack, Latvian

1.e4 e5 2.Nf3 f5 3.Bc4 

C40

Strautins Gambit, Latvian

1.e4 e5 2.Nf3 f5 3.Bc4 b5

C40

Polerio-Svedenborg Variation, Latvian

1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 d5

C40

Poisoned Pawn Variation, Latvian

1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 Qg5 5.d4 Qxg2

C40

Duke of Courland Variation, Latvian

1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 Qg5 5.d4 Qxg2 6.Qh5 g6 7.Bf7 Kd8 9.Bg6 Qh1

C40

Morgado Defense, Latvian

1.e4 e5 2.Nf3 f5 3.Bc4 Nf6

C40

Diepstraten Countergambit, Latvian

1.e4 e5 2.Nf3 f5 3.c4

C40

Clam Gambit, Latvian

1.e4 e5 2.Nf3 f5 3.d3 Nc6 4.exf5

C40

Mason Countergambit, Latvian

1.e4 e5 2.Nf3 f5 3.d4

C40

Latvian Gambit Accepted

1.e4 e5 2.Nf3 f5 3.exf5

C40

Lobster Gambit, Latvian

1.e4 e5 2.Nf3 f5 3.g4

C40

Mlotkowski Variation, Latvian

1.e4 e5 2.Nf3 f5 3.Nc3

C40

Fraser Defense, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Nc6

C40

Corkscrew Counter-Gambit, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Nf6 4.Bc4 fxe4 5.Nf7 Qe7 8.Nxh8 d5

C40

Greco Variation, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Qe7

C40

Mail Line, Latvian Gambit Accepted

1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.d4

C40

Bilguer Variation, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.d4 d6 5.Nc4

C40

Bronstein Attack, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.d4 d6 5.Nc4 fxe4 6.Be2

C40

Nimzovich Attack, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.d4 d6 5.Nc4 fxe4 6.Ne3

C40

Bronstein Gambit, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.d4 d6 5.Nc4 fxe4 6.Qh5+ g6 7.Qe2

C40

Foltys-Leonhardt Variation, Latvian Gambit

1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.Nc4

C40

Foltys Variation, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.Nc4 fxe4 5.d3

C40

Leonhardt Variation, Latvian

1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.Nc4 fxe4 5.Nc3

C40

Damiano Defense

1.e4 e5 2.Nf3 f6

C40

Damiano Gambit

1.e4 e5 2.Nf3 f6 3.Nxe5 fxe5 4.Qh5+ g6 5.Qxe5+ Qe7 6.Qxh8

C40

Chigorin Gambit, Damiano

1.e4 e5 2.Nf3 f6 3.Nxe5 Qe7 4.Nf3 d5

C40

Levenstein; Queen's Defense; Brazilian; Gunderam

1.e4 e5 2.Nf3 Qe7

C40

Gunderam Gambit

1.e4 e5 2.Nf3 Qe7 3.Bc4 f5

C40

McConnell Defense

1.e4 e5 2.Nf3 Qf6

C40

Greco Defense

1.e4 e5 2.Nf3 Qf6

C40

Labourdonnais Gambit

1.e4 e5 2.Nf3 Qf6 3.Bc4 Qg6 4.O-O

C41

Philidor Defense; C41

1.e4 e5 2.Nf3 d6

C41

Lopez Counter-Gambit, Philidor

1.e4 e5 2.Nf3 d6 3.Bc4 f5

C41

Philidor Gambit

1.e4 e5 2.Nf3 d6 3.d4 Bd7

C41

Alapin-Blackburne Gambit, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Bg4 4.dxe5 Nd7

C41

Exchange Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 exd4

C41

Morphy Gambit, Philidor

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Bc4

C41

Bird Gambit, Philidor

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.c3

C41

Paulsen Attack, Philidor

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 d5 5.exd5

C41

Larsen Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 g6

C41

Boden Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Qxd4 Bd7

C41

Philidor Counter Attack

1.e4 e5 2.Nf3 d6 3.d4 f5

C41

Zukertort Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 f5 4.Nc3

C41

Hanham; Lord Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nd7

C41

Delmar Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.c3

C41

Schlechter Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Nc3

C41

Krause Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O

C41

Steiner Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O Be7 6.dxe5

C41

Sharp Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 Nb6

C41

Lion Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Nc3 Nf6

C41

Jaenisch Counter-Attack, Philidor; Nimzovich Variation

1.e4 e5 2.Nf3 d6 3.d4 Nf6

C41

Klein Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Bc4

C41

Sokolsky Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Nbd2

C41

Rellstab Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Qd5

C41

Larobok Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7

C41

Locock Variation, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Ng5 h6 5.Nxf7

C42

Petroff Defense; Russian Defense; C42

1.e4 e5 2.Nf3 Nf6

C42

Urosov Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.Bc4

C42

Boden-Kieseritzky Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.Bc4 Nxe4 4.Nc3

C42

Lichtenhein Defense, Petroff

1.e4 e5 2.Nf3 Nf6 3.Bc4 Nxe4 4.Nc3 d5

C42

Russian Three Knights Var, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nc3

C42

Paulsen Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nc4

C42

Karklins-Martinovsky Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nd3

C42

Millenium Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Bd3

C42

Kaufmann Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.c4

C42

French Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d3

C42

Classical Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4

C42

Marshall Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6

C42

Tarrasch Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 Bg4

C42

Staunton Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 c6

C42

Jaenisch Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.c4

C42

Browne Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.c4 Nb4 9.cxd5

C42

Chigorin Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1

C42

Berger Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1 Bg4 9.c3 f5 10.Nbd2

C42

Mason Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O O-O

C42

Mason-Showalter Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Nc6

C42

Nimzovich Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3

C42

Lasker Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2

C42

Cozio (Lasker) Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2

C42

Cochrane Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nxf7

C42

Stafford Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nc6

C42

Damiano Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4

C42

Kholmov Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4 4.Qe2 Qe7

C42

Moody Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.Qe2 Nc6 4.d4

C43

Modern Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.d4

C43

Symmetrical Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.d4 d5

C43

Suchting Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.Bc4

C43

Tal Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Bb5

C43

Center Attack, Petroff

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4

C43

Trifunovic Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.O-O O-O 7.c4 Bxe5

C43

Murret Variation, Petroff

1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 Nc6

C43

Steinitz Variation, Petoff; C43

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.d4

C43

Urusov Gambit, Petroff

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.d4 exd4 4.Bc4

C44

C44

1.e4 e5 2.Nf3 Nc6

C44

Paschman Wing Gambit

1.e4 e5 2.Nf3 Nc6 3.b4

C44

Taylor Opening; Inverted Hungarian

1.e4 e5 2.Nf3 Nc6 3.Be2

C44

Inverted Hanham Opening

1.e4 e5 2.Nf3 Nc6 3.Be2 Nf6 4.d3 d5 5.Nbd2

C44

Basman Gambit

1.e4 e5 2.Nf3 Nc6 3.Be2 Nf6 4.d4 exd4 5.e5

C44

Ponziani; Staunton; English Knights

1.e4 e5 2.Nf3 Nc6 3.c3 

C44

Spanish Variation, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Bb5

C44

Nikitin Gambit, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Bb5 dxe4 5.Nxe5 Qd5 6.Qa4

C44

Caro Variation, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 Bd7

C44

Steinitz Variation, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 f6

C44

Leonhardt Variation, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 Nf6

C44

Ponziani Counter-Gambit

1.e4 e5 2.Nf3 Nc6 3.c3 f5

C44

Schmidt Attack, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 f5 4.d4 d6 5.d5

C44

Jaenisch Counterattack, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 Nf6

C44

Neumann Gambit, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 Nf6 4.Bc4

C44

Breyer Opening, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 Nf6 4.d3 Be7 5.b4

C44

Vukovic Gambit, Ponziani

1.e4 e5 2.Nf3 Nc6 3.c3 Nf6 4.d4 Nxe4 5.d5 Bc5

C44

Dresden Opening

1.e4 e5 2.Nf3 Nc6 3.c4

C44

Scotch Game

1.e4 e5 2.Nf3 Nc6 3.d4

C44

MacLopez; Relfsson Gambit, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bb5

C44

Scotch Gambit

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4

C44

London Defense, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bb4+

C44

Vitzhum Attack, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bc5 5.Ng5 Nh6 6.Qh5

C44

Paulsen; Anderssen C-A, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bc5 5.O-O d6 6.c3 Bg4

C44

Benima Defense, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Be7

C44

Goering Gambit, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3

C44

Goering Gambit Declined, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 d5

C44

Double Pawn Sacrifice, Goering Gambit

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Bc4

C44

Bardeleben Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Nxc3 Bb4 6.Bc4 Nf6

C44

Lolli Attack, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 Nxd4

C44

Napoleon Gambit, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 Nxd4 4.Nxd4 exd4 5.Bc4

C44

Konstantinopolsky Opening

1.e4 e5 2.Nf3 Nc6 3.g3

C44

Chicago; Irish; Schulze-Muller Gambit

1.e4 e5 2.Nf3 Nc6 3.Nxe5 Nxe5 4.d4

C45

C45

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4

C45

Malaniuk Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bb4+

C45

Classical Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5

C45

Gunsberg Defense, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bb5 Nd8

C45

Fleissig; Meitner Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Nc2

C45

Blackburne Attack, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Qd2

C45

Millennium Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Qg6

C45

Blumenfeld Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.Nb5

C45

Potter Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3

C45

Romanishin Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 Bb4+

C45

Geller Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 Bb6 6.a4 a6 7.Nc3 Nf6

C45

Intermezzo Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nxc6 Qf6

C45

Alekhine Gambit, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.e5

C45

Schmidt Var; Scotch Four Knights

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nc3

C45

Mieses Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6

C45

Tartakower Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.Nd2

C45

Steinitz; Pulling Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4

C45

Braune Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Be3

C45

Horwitz Attack, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nb5

C45

Steinitz Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nc3

C45

Modern Defesne, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nc3 Bb4

C45

Fraser Attack, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nf3

C45

Paulsen Variation, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nf5

C45`

Paulsen Attack, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bb5

C46

Three Knights Opening; C46

1.e4 e5 2.Nf3 Nc6 3.Nc3

C46

Schlechter Variation, Three Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Bb4 4.Nd5 Nf6

C46

Winawer Defense, Three Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 f5

C46

Steinitz Defense, Three Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 g6

C46

Rosenthal Variation, Three Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 g6 4.d4 exd4 5.Nd5

C46

Italian Variation, Four Knights 

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4

C46

Halloween Gambit, Four Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5

C47

Four Knights Openng; C47

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6

C47

Gunsberg Variation, Four Kngiths

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3

C47

Provincial Opening, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3 d6 5.h3

C47

Noa Gambit, Four Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4 Nxe4 5.Bxf7+

C47

Bogoljubow (Scotch) Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4

C47

Oxford Gambit, Four Kngihts

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.d5 Nd4

C47

Krause Gambit, Four Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5

C47

Leonhardt Defense, Four Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5 Qe7

C47

Belgrade Gambit, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5

C47

Schmid Gambit, Four Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Nxe4

C48

Spanish Four Knights Game; C48

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5

C48

Ranken Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6

C48

Classical Variation, Four Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5

C48

Marshall Gambit, Four Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.Nxe5 Nd4 6.Ba4 O-O

C48

Rubinstein Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4

C49

Double Ruy Lopez Opening, 4 Knights; C49

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4

C49

Paulsen Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.Bxc6

C49

Svenonius Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d5

C49

Janowski Variation, Four Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d6 8.Re1

C49

Symmetrical Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6

C49

Bernstein Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Ne7

C49

Metger Unpin Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Qe7 9.Re1 Nd8

C49

Pillsbury Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7

C49

Maroczy Variation, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Ne2

C49

Blackburne Attack, 4 Knights

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.Nd5 Bc5 7.d4

C50

Italian Game; C50

1.e4 e5 2.Nf3 Nc6 3.Bc4

C50

Giuoco Piano; Italian Opening

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5

C50

Jerome Gambit; Kentucky Opening

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+

C50

Giuoco Pianissimo

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 

C50

Lucchini Gambit; Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 f5

C50

Italian Four Knights Variation

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Nc3 

C50

Canal Variation, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Nc3 d6 6.Bg5

C50

Rosentreter Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d4

C50

Italian Variation, Four Knights Game

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Nc3 Nf6

C50

Deutz Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.d4

C50

Hungarian Defense

1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7

C50

Tartakower Variation, Hungarian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.d4 exd4 5.c3 Nf6 6.e4 Ne4

C50

Half Giuoco Piano; Semi-Italian Opening

1.e4 e5 2.Nf3 Nc6 3.Bc4 d6

C50

Rousseau Gambit

1.e4 e5 2.Nf3 Nc6 3.Bc4 f5

C50

Shilling (Kostic) Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4

C51

Evans Gambit; C51

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4

C51

Lange Variation, Evans Gambit

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.b5 Na5 6.Nxe5 Nh6

C51

Evans Gambit Accepted

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4

C51

Normal Position, Evans Gambit

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6

C51

Ulvestad Variation, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6 9.d5 Na5 10.Bb2

C51

Paulsen Variation, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6 9.d5 Na5 10.Bb2 Ne7

C51

Morphy Attack, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6 9.Nc3 

C51

Fraser Attack; Mortimer, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6 9.Nc3 Bg4 10.Qa4

C51

Goering Attack, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6 9.Nc3 Na5 10.Bg5

C51

Stone-Ware Defense, Evans Gambit

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bd6

C51

Anderssen Variation, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Be7

C51

Cordel Line, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Be7 6.d4 Na5

C51

Hein Countergambit, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 d5

C52

Main Line, Evans Gambit; C52

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5

C52

Leonhardt Variation, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 b5

C52

Sokolsky Variation, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Bg5

C52

Lasker Defense, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.O-O Bb6

C52

Tartakower Attack, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Qb3

C52

Pierce Defense, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4

C52

Schulen Defense, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O b5

C52

Waller Attack, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O d6 8.Qb3

C52

Compromised Defense, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O dxc3

C52

Mieses Defense, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O Nge7

C52

Slow Variation, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O

C52

Richardson Attack, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O Nf6 7.d4 O-O 8.Nxe5

C53

Classical Variation, Italian; C53

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3

C53

Labourdonnais Variation, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 d6 5.d4 exd4 6.cxd4 Bb6

C53

Alexandre Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 f5

C53

Giuoco Pianissimo

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3

C53

Center Attack, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4

C53

Grevo Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4

C53

Albin Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.O-O

C53

Lewis Defense, Italian; Closed Variation

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7

C53

Center Holding Variation, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 5.d4 Bb6

C53

Mestel Variation, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 5.d4 Bb6 6.Bg5

C54

C54

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6

C54

Bird Attack, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.b4

C54

Cracow Variation, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Kf1

C54

Moeller (Therkatz) Attack, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.O-O Bxc3 9.d5

C54

Therkatz-Herzog, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.O-O Bxc3 9.d5 Bf6 10.Re1 Ne7

C54

Greco Variation, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.O-O Nxc3

C54

Mason Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.O-O

C55

Two Knights Defense; C55

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6

C55

De Riviere Gambit

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.c3

C55

Modern Bishop's Opening

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3

C56

Open Variation, Two Knights Defense; C56

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4

C56

Perreux Variation, Two Knights Defense

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.Ng5

C56

Scotch Gambit

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O

C56

Max Lange Attack

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5

C56

Loman Defense, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 d5 7.exf6 dxc4 8.Re1+ Be6 9.Ng5 g6

C56

Marshall Variation, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 d5 7.exf6 dxc4 8.Re1+ Be7 9.Ng5 Qd5 10.Nc3 Qf5

C56

Double Gambit Accepted, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4

C56

Nachmanson Gambit, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4 6.Nc3

C56

Jordansky Attack, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4 6.Re1 d5 7.Bxd5 Qxd5 8.Nc3 Qa5 9.Ne4 Be6 10.Bg5

C57

Prussian Game; Knight Attack, Two Knights; C57

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5

C57

Traxler; Wilkes-Barre Var, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5

C57

Trencianske-Teplice Gambit, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5 5.Bxf7+ Ke7 6.d4

C57

Ulvestad Variation, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5

C57

Kurkin Gambit, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5 6.Bf1 h6 7.Nxf7

C57

Kloss Gambit, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nb4

C57

Fritz Variation, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nd4

C57

Berliner Variation, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nd4 6.c3 b5 7.Bf1 Nxd5 8.Ne4 Qh4

C57

Lolli Attack, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.d4

C57

Fried Liver; Fegatello Attack, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.Nxf7

C57

Ponziani-Steintz Gambit, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Nxe4

C58

Polerio Defense, Two Knights; C58

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5

C58

Bogoljubow Variation, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3

C58

Colman Variation, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Rb8

C58

Kieseritzky; Morphy Var, 2 Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.d3

C58

Yankovich Variation, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.d3 h6 7.Nf3 e4 8.Qe2 Nxc4 9.dxc4 Bc5 10.Nfd2

C59

C59

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2

C59

Suhle Defense, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2 h6

C59

Goering Variation, Two Knights

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2 h6 9.Nf3 e4 10.Ne5

C60

Ruy Lopez; Spanish Opening; C60

1.e4 e5 2.Nf3 Nc6 3.Bb5

C60

Bulgarian Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a5

C60

Rotary-Albany Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 b6

C60

Alapin Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bb4

C60

Alapin Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bb4 4.c3 Ba5 5.Bxc6 dxc6

C60

Lucena Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Be7

C60

Sawyer's Gambit, Ruy Lopez; Spanish Countergambit

1.e4 e5 2.Nf3 Nc6 3.Bb5 d5

C60

Harding Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 d5 4.Nxe5 Qg5 5.Nxc6

C60

Fricke Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 d5 4.Nxe5 Qg5 5.O-O

C60

Nuremberg Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f6

C60

Brentano Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 g5

C60

Barnes; Smyslov; Fianchetto Var, Ruy

1.e4 e5 2.Nf3 Nc6 3.Bb5 g6

C60

Retreat Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nc8

C60

Cozio Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7

C60

Tartakower Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.d4 exd4 5.Nxd4 g6 6.Nc3 Bg7 7.Be3 O-O 8.Qd2 d5

C60

Paulsen Variation, Cozio Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.Nc3 g6

C60

Vinogradov Var, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Qe7

C60

Frankfort; Gunderam Var, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Qf6

C61

Bird Defense, Ruy Lopez; C61

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4

C61

Paulsen Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 4.Nxd4 exd4 5.O-O Ne7

C62

Steinitz Defense, Ruy Lopez; C62

1.e4 e5 2.Nf3 Nc6 3.Bb5 d6

C62

Nimzovich Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 Bd7 4.Nc3 Nf6 5.Bxc6

C62

Center Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 exd4 5.O-O

C63

Schliemann; Jaenisch Var, Ruy Lopez; C63

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5

C63

Exchange Variation, Schliemann Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Bxc6

C63

Schoenemann Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d4

C63

Jaenisch Gambit Accepted, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.exf5

C63

Berger (Dyckhoff) Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 

C63

Kostic Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 Be7

C63

Moehring Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Nxe5 dxe4 7.Nxc6 Qd5

C63

Tartakower Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 Nf6

C63

Soviet Youth Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 Nd4 5.O-O

C63

Kostic Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 Nf6 5.exf5 Bc5

C64

Classical; Cordel Var, Ruy Lopez; C64

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5

C64

Spanish Wing Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.b4

C64

Charousek Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Bb6

C64

Konikowski Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 d5

C64

Cordel Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 f5

C64

Benelux Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Nf6 5.d4 Bb6 6.O-O O-O

C64

Boden Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Qe7

C64

Zaitsev Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nd4 5.b4

C64

Zukertort Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nf6 5.c3

C65

Berlin Defense, Ruy Lopez; C65

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6

C65

Kaufmann Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.Be3

C65

Anderssen Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.Bxc6+

C65

Duras Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.c4

C65

Mortimer Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Ne7

C65

Mortimer Trap, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Ne7 5.Nxe5 c6

C65

Nyholm Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d4 exd4 5.O-O

C65

Beverwijk Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5

C66

Improved Steinitz Defense, Ruy Lopez; C66

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6

C66

Hedgehog Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7

C66

Closed Bernstein Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Bg5

C66

Closed Showalter Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Bxc6

C66

Tarrasch Trap, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Re1 O-O

C66

Closed Wolf Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 exd4

C66

Fishing Pole Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Ng4

C67

Rio Gambit Accepted, Ruy Lopez; C67

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4

C67

Rosenthal Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 a6

C67

Rio de Janeiro Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7

C67

Minckwitz Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.dxe5

C67

Trifunovic Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 d5

C67

Pillsbury Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6+ bxc6 8.dxe5 Nb7 9.b3

C67

Zukertort Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6+ bxc6 8.dxe5 Nb7 9.c4

C67

Berlin; Rio de Janerio Var, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6+ bxc6 8.dxe5 Nb7 9.Nc3 O-O 10.Re1

C67

Winawer Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6+ bxc6 8.dxe5 Nb7 9.Nd4 O-O

C67

Cordel Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6+ bxc6 8.dxe5 Nf5

C67

L'Hermet Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6

C67

Westerinen Line, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Ne4

C68

Morphy Defense, Ruy Lopez; C68

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6

C68

Exchange Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6

C68

Lutikov Variation, Ruy Lopez Exchange

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6

C68

Keres Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6 5.Nc3

C68

Romanovsky Variation, Ruy Lopez Exchange

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6 5.Nc3 f6 6.d3

C68

Alekhjne Variation, Ruy Lopez Exchange

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd6

C68

Barendregt-Fischer Var, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O

C68

King's Bishop Variation, Ruy Lopez Exchange

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bd6

C68

Alapin Gambit, Ruy Lopez Exchange

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bg4 6.h3 h5

C69

Gligoric Variation, Ruy Lopez; C69

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6

C69

Bronstein Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Qd6

C70

Morphy Defense, Ruy Lopez; C70

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4

C70

Caro Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5

C70

Graz Variation, Ruy

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Bc5

C70

Furman-Taimanov; Wing Var, Ruy; Norwegian Variation

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5

C70

Nightingale Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5 6.Bxf7+

C70

Alapin's Defense Deferred, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bb4

C70

Classical Defense Deferred, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bc5

C70

Schliemann Defense Deferred, Ruy

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5

C70

Jaenisch Gambit Deferred, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5 5.exf5

C70

Cozio Defense Deferred, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nge7

C71

Steinitz Defense Deferred; Ruy Lopez; C71

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6

C71

Modern Steinitz Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6

C71

Keres Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c4

C71

Noah's Ark Trap, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.d4 b5 6.Bb3 exd4 7.Nxd4 Nxd4 8.Qxd4 c5 9.Qd5 Be6 10.Qc6+ Bd7

C72

C72

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O

C73

C73

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6

C73

Richter Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4

C73

Alapin Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6

C74

C74

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3

C74

Siesta Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5

C74

Kopaiev Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5 6.exf5 Bxf5 7.O-O

C75

C75

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7

C76

C76

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 g6

C77

C77

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6

C77

Treybel; Flohr; Exchange Var Deferred

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Bxc6

C77

Bayreuth Variation, ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Bxc6

C77

Jaffe Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.c3

C77

Anderssen Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3

C77

Duras Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.c4

C77

Mackenzie Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4

C77

Center Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4 exd4

C77

Nimzovich; Tarrasch Var, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Nc3

C77

Wormald Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2

C78

Normal Variation, Ruy Lopez; C78

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O

C78

Arkangelsk; Counterthrust Var, Ruy

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5

C78

Shannon Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bb7 7.Ng5 d5

C78

Wing Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7 7.a4

C78

Neo-Steinitz Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 d6

C78

Moeller Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5

C79

Central Countergambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d5

C79

Russian Defense, Ruy Lopez; C79; Lasker Defense

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6

C79

Brix Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O g6

C80

Tarrasch; Open Variation, Ruy Lopez; C80

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4

C80

Schlechter Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.a4 Nxd4

C80

Berger Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.a4 Nxd4 9.Nxd4 exd4 10.Nc3

C80

Harksen Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.c4

C80

Bernstein Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Nbd2

C80

Karpov Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Nbd2 Nc5 10.c3 d4

C80

Zukertort Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Ne7

C80

Richter Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.d5

C80

Friess Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Nxe5

C80

Riga Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 exd4

C80

Knoore Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Nc3

C80

Tartakower Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Qe2

C80

Skipworth Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Re1 d5

C81

Keres; Estonian; Howell; Moscow Var

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6

C81

Howell Attack, Ruy Lopez; C81

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2

C81

Adam Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 Be7 10.c4

C81

Ekstrom Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 Be7 10.Rd1 O-O 11.c4

C82

C82

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3

C82

Italian Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5

C82

St Petersburg Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Nbd2

C82

Dilworth; Kleczynski Var, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Nbd2 O-O 11.Bc2

C82

Motzko Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Qd3

C82

Nenarokov Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Qd3 Ne7

C82

Berlin Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Nc5

C83

Malkin Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5

C83

C83

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 

C83

Breslau Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 10.Re1 O-O 11.Nd4

C84

Closed Defense, Ruy Lopez; C84

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7

C84

Center Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4

C84

Basque Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4 exd4 7.e5 Ne4 8.c3

C84

Lopez Four Knights, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Nc3

C85

Delayed Exchange Ruy Lopez Deferred; C85

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6

C86

Worrall Attack, Ruy Lopez; C86

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2

C86

Schlechter Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 O-O 8.c3 d5

C86

English Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 O-O 8.c3 d6 9.d4 Bg4

C87

C87

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1

C87

Averbakh Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6

C87

Kecskemet; Timbuktu Var, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6 7.c3 O-O 8.d4 Bd7 9.Nbd2 Be8

C87

Romanovsky Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6 7.c3 O-O 8.d4 Bd7 9.Nbd2 exd4 10.cxd4 Nb4

C88

C88

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3

C88

Trajkovic Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 Bb7

C88

Pseudo-Marshall Var, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 Bb7 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5

C88

Rosen Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.d4

C88

Anti-Marshall Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4

C89

C89

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3

C89

Marshall Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5

C89

Marshall Counter-Attack, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.d4

C89

Steiner Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 e4

C89

Kevitz Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.Bxd5 cxd5 13.d4 Bd6 14.Re3

C89

Geller Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 Bd6 13.Re1 Qh4 14.g3 Qh3

C89

Fischer Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.g3

C90

C90

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6

C90

Balla Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 Na5 9.Bc2 c5 10.d4 Qc7

C90

Suetin Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.a3

C90

Lutikov Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.Bc2

C90

Pilnik Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.d3

C90

Suetin Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.a3

C90

Lutikov Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.Bd2

C90

Leonhardt Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 Na5 9.Bc2 c5 10.d4 Qc7 11.h3 Nc6 12.d5 Nd8 13.Nbd2 g5

C91

Yates Variation, Ruy; C91

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.d4

C91

Bogoljubow; Counterthrust Var, Ruy

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.d4 Bg4

C92

C92

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3

C92

Keres Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 a5

C92

Flohr; Zaitsev; Lenzerheide Var, Ruy

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Bb7

C92

Kholmov Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Be6

C92

Spanish Benoni, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.d5

C92

Keres Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nd7

C92

Zaitsev System, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Re8

C93

Smyslov Variation, Ruy Lopez; C93

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 h6

C94

Breyer; Retreat Variation, Ruy Lopez; C94

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8

C95

C95

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8 10.d4

C95

Borisenko Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8 10.d4 Nbd7

C95

Arseniev Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8 10.d4 Nbd7 11.c4

C95

Romanishin Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8 10.d4 Nbd7 11.Nbd2 Bb7 12.Bc2 Re8 13.Nf1 Bf8 14.Bg5

C95

Simagin Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8 10.d4 Nbd7 11.Nh4

C96

C96

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5

C96

Borisenko Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Nc6

C96

Keres Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Nd7

C97

Chigorin Variation, Ruy Lopez; C97

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 

C97

Classical Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2

C98

C98

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6

C98

Rauzer Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6 13.dxe5 dxe5 14.a4

C99

C99

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4

D00

Queen Pawn Game; Close Opening; D00

1.d4 d5

D00

Sarratt Attack

1.d4 d5 2.Bf4

D00

Steinitz Countergambit, Queen Pawn Game

1.d4 d5 2.Bf4 c5

D00

Morris Gambit

1.d4 d5 2.Bf4 c5 3.e4 

D00

Morris Counter-Gambit

1.d4 d5 2.Bf4 c5 3.e4 dxe4

D00

Bishop Attack; Levitsky Attack, Queen Pawn Game

1.d4 d5 2.Bg5

D00

Zot

1.d4 d5 2.Bg5

D00

Welling Variation, Queen Pawn Game

1.d4 d5 2.Bg5 Bg4

D00

Euwe Variation, Queen Pawn Game

1.d4 d5 2.Bg5 h6 3.Bh4 c6 4.Nf3 Qb6

D00

Stonewall Attack, Queen Pawn Game

1.d4 d5 2.e3 Nf6 3.Bd3

D00

Stonewall Attack

1.d4 d5 2.e3 Nf6 3.Bd3 c5 4.c3

D00

Blackmar-Diemer Gambit

1.d4 d5 2.e4

D00

Fritz Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Bc4

D00

Diemer-Rosenberg Attack, BDG

1.d4 d5 2.e4 dxe4 3.Be3

D00

Blackmar Gambit; Gedult Gambit

1.d4 d5 2.e4 dxe4 3.f3

D00

Pohlmann Variation, BDG

1.d4 d5 2.e4 dxe4 3.f3 f5

D00

Mieses; Nimzovich Var, BDG

1.d4 d5 2.e4 dxe4 3.f3 Nc6

D00

Polish Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3

D00

Grosshans Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Bd7

D00

Zeller Defesne, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Bf5

D00

Zeller Defesne, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Bf5 4.f3 exf3 5.Qxf3 Bc8

D00

Soller Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Bf5 4.f3 Nf6 5.Bc4

D00

Dries Counter-Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 c5

D00

Lemberger Counter-Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 e5

D00

Soller; Lemberger Var, BDG; Diemer Attack

1.d4 d5 2.e4 dxe4 3.Nc3 e5 4.Be3

D00

Endgame Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 e5 4.dxe5

D00

Rasmussen Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 e5 4.Nge2

D00

Lange Gambit; Alfred Lange Gambit; Simple Variation

1.d4 d5 2.e4 dxe4 3.Nc3 e5 4.Nxe4

D00

Sneiders Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 e5 4.Qh5

D00

Rasa-Studier Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 e6 4.Be3

D00

Giertz-Peters Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 e6 4.f3

D00

Polish Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 e6 4.f3 Bf5 5.Bg5

D00

Netherlands Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 f5

D00

Mieses; Nimzovich Var, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nc6

D00

Vienna Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6

D00

Studier-Rasa Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.Be3

D00

Von Popiel Gambit

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.Bg5

D00

Zilbermints Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.Bg5 Bf5 5.Bxf6 exf6 6.g4 Bg6 7.Qe2 Bb4 8.Qb5+

D00

Blackmar-Diemer Gambit

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3

D00

Wiesengren Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bc5

D00

Hans Mullers; Vienna V

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5

D00

Soller; Vienna Var, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5 5.Bc4

D00

Tejler Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5 5.Bf4

D00

Sperling Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5 5.d5

D00

Diemer Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5 5.fxe4

D00

Kampars Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5 5.g4 Bg6 6.g5 Nd5 7.fxe4

D00

Gunderam Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5 5.g4 Bg6 6.h4

D00

Brombacher; Daberitz Var, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 c5

D00

O'Kelly Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 c6

D00

Langeheinecke Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 e3

D00

Elbert Counter-Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 e5

D00

Weinsbach Declination, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 e6

D00

Pfrang Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 e6 5.fxe4 Bb4 6.Bd3 Bxc3+ 7.bxc3 Nxe4 8.Be3

D00

Ritter Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 b6

D00

Gunderam; Tartakower Var, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bf5

D00

Teichmann Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4

D00

Kaulich Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 c5

D00

Ziegler; Gunderam's 2nd Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 c6

D00

Euwe Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 e6 

D00

Zilbermints Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 e6  6.Bg5 Be7 7.Bd3 Nc6 8.O-O Nxd4 9.Kh1

D00

Duthilleuk Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 e6 6.Bd3 Nc6 7.Bg5 Be7 8.Ne4

D00

Bogoljubow Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6

D00

Mad Dog Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 6.Bc4 Bg7 7.h4

D00

Nimzovich Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 6.Bc4 Bg7 7.Ne5

D00

Kloss Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 6.Bc4 Bg7 7.O-O O-O 8.Kh1

D00

Studier Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 6.Bc4 Bg7 7.O-O O-O 8.Qe1

D00

Diemer Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 6.Bf4

D00

Peters Attack, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 6.Ne5

D00

Gunderam Defense, BDG; Rook Pawn Defense

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 h5

D00

Schuttler Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Nbd7

D00

Pietrowsky Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Nc6

D00

Ryder Variation, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Qxf3

D00

Tautvaisis Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Qxf3 Nc6

D00

Tejler Gambit, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Qxf3 Qxd4 6.Be3 Qg4 7.Qf2 Ne4 8.Nxe4 Qxe4 9.O-O-O Nc6 10.Bd3

D00

Albrecht; Karlshruhle Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 g6

D00

Lamb Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Nc6

D00

Mason Attack, Queen Pawn Game

1.d4 d5 2.f4

D00

Zurich Gambit

1.d4 d5 2.g4

D00

Chigorin; Ponziani; Veresov

1.d4 d5 2.Nc3

D00

Alburt Defense, QP

1.d4 d5 2.Nc3 Bf5

D00

Anti-Veresov

1.d4 d5 2.Nc3 Bg4

 

D00

Irish Gambit, QP

1.d4 d5 2.Nc3 c5

D00

Shaviliuk Gambit, QP

1.d4 d5 2.Nc3 e5

D00

Dutch System, QP

1.d4 d5 2.Nc3 f5

D00

Fianchetto Defense, QP

1.d4 d5 2.Nc3 g6 3.Nf3 Bg7

D00

Shropshire Defense

1.d4 d5 2.Nc3 h5

D00

Hubsch Gambit

1.d4 d5 2.Nc3 Nf6 3.e4 Nxe4

D00

Amazon Attack

1.d4 d5 2.Qd3

D00

Siberian Attack

1.d4 d5 2.Qd3 Nc6 3.Nc3

D01

Betbeder; Veresov; Levitzky; Parisian

1.d4 d5 2.c4 dxc4 3.e4 f5

D01

Richter-Veresov Opening; D01

1.d4 d5 2.Nc3 Nf6 3.Bg5

D01

Veresov Variation, QP

1.d4 d5 2.Nc3 Nf6 3.Bg5 Bf5 4.Bxf6

D01

Richter Variation, Veresov

1.d4 d5 2.Nc3 Nf6 3.Bg5 Bf5 4.f3

D01

Classical Defense, Veresov

1.d4 d5 2.Nc3 Nf6 3.Bg5 e6 4.Nf3

D01

Two Knights System, Veresov

1.d4 d5 2.Nc3 Nf6 3.Bg5 Nbd7 4.Nf3

D01

Grunfeld Defense, Veresov

1.d4 d5 2.Nc3 Nf6 3.Bg5 Nbd7 4.Nf3 g6

D01

Boyce Defense, Veresov

1.d4 d5 2.Nc3 Nf6 3.Bg5 Ne4

D02

Zukertort Variation, QP; D02

1.d4 d5 2.Nf3

D02

Anti-Torre, QP

1.d4 d5 2.Nf3 Bg4

D02

Anti-Torre

1.d4 d5 2.Nf3 Bg4 3.Ne5 Bf5 4.g4

D02

Queen's Gambit Reversed; Krause Variation

1.d4 d5 2.Nf3 c5

D02

Chandler Gambit, QP

1.d4 d5 2.Nf3 c5 3.g3 cxd4 4.Bg2

D02

Chigorin Variation, QP

1.d4 d5 2.Nf3 Nc6

D02

Symmetrical Variation, QP

1.d4 d5 2.Nf3 Nf6

D02

London System; Queen's Bishop Opening

1.d4 d5 2.Nf3 Nf6 3.Bf4

D02

Poisoned Pawn Variation, QP

1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Qb6 5.Nc3

D02

Zilbermints Variation, QP

1.d4 d5 2.Nf3 Nf6 3.c4 b5

D02

Pseudo-Catalan

1.d4 d5 2.Nf3 Nf6 3.g3

D02

Barry Attack

1.d4 Nf6 2.Nf3 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Be2

D03

Torre Attack, QP; D03

1.d4 d5 2.Nf3 Nf6 3.Bg5

D03

Breyer Variation, QP

1.d4 d5 2.Nf3 Nf6 3.Bg5 e6 4.e3 c5 5.c3 Qb6

D03

Grunfeld Variation, QP

1.d4 d5 2.Nf3 Nf6 3.Bg5 g6

D03

Gossip Variation, QP

1.d4 d5 2.Nf3 Nf6 3.Bg5 Ne4

D04

Colle System; D04

1.d4 d5 2.Nf3 Nf6 3.e3

D04

Bishop Defense, QP; Anti-Colle

1.d4 d5 2.Nf3 Nf6 3.e3 Bf5

D05

Classical Defense, Colle System; D05

1.d4 d5 2.Nf3 Nf6 3.e3 e6

D05

Zukertort Variation, QP

1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3

D05

Rubinstein Attack, Colle

1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.b3

D06

Queen's Gambit; Aleppo Gambit; D06

1.d4 d5 2.c4

D06

Zilbermints Gambit, QGD

1.d4 d5 2.c4 b5

D06

Brieger Defense; Sahovic Defense, QGD; Baltic Defense

1.d4 d5 2.c4 Bf5

D06

Pseudo-Slav, QGD

1.d4 d5 2.c4 Bf5 3.Nc3 e6 4.Nf3 c6

D06

Pseudo-Chigorin, QGD

1.d4 d5 2.c4 Bf5 3.Nc3 e6 4.Nf3 Nc6

D06

Queen Attack, Baltic Defens, QGD

1.d4 d5 2.c4 Bf5 3.Nc3 e6 4.Qb3

D06

Austrian Defense; Summetrical Defense, QGD

1.d4 d5 2.c4 c5

D06

Gusev Countergambit, QGD

1.d4 d5 2.c4 c5 3.cxd5 Nf6

D06

Haberditz Variation, QGD

1.d4 d5 2.c4 c5 3.cxd5 Nf6 4.e4 Nxe4 5.dxc5 Qa5+

D06

Salvio Countergambit, QGD

1.d4 d5 2.c4 c5 3.dxc5 d4

D06

Alekhine Defense, QGD

1.d4 d5 2.c4 g6

D06

Tartakower Gambit, QGD

1.d4 d5 2.c4 Nc6 3.Nc3 e5

D06

Modern Gambit, Chigorin Defense

1.d4 d5 2.c4 Nc6 3.Nc3 Nf6 4.Nf3 dxc4

D06

Alekhine Variation, Chigorin Defense

1.d4 d5 2.c4 Nc6 3.Nf3 Bg4 4.Qa4

D06

Lazard Gambit, Chigorin Defense

1.d4 d5 2.c4 Nc6 3.Nf3 e5

D06

Marshall Defense; Knight Defense, QGD

1.d4 d5 2.c4 Nf6 

D06

Cocquio Counter Gambit, QGD; Tan Gambit

1.d4 d5 2.c4 Nf6 3.cxd5 c6

D07

Chigorin Defense, QGD; D07

1.d4 d5 2.c4 Nc6

D07

Exchange Variation, Chigorin Defense

1.d4 d5 2.c4 Nc6 3.cxd5 Qxd5

D07

Costa's Line

1.d4 d5 2.c4 Nc6 3.cxd5 Qxd5 4.e3 e5 5.Nc3 Bb4 6.Bd2 Bxc3 7.Bxc3 exd4 8.Ne2

D07

Janowski Variation, QGD

1.d4 d5 2.c4 Nc6 3.Nc3 dxc4 4.Nf3

D08

Albin Countergambit; Cavalotti Var, QGD; D08

1.d4 d5 2.c4 e5

D08

Lasker Trap, QGD

1.d4 d5 2.c4 e5 3.dxe5 d4 4.e3 Bb4+ 5.Bd2 dxe3

D08

Normal Line, Albin Countergambit, QGD

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3

D08

Tartakower Defense, QGD

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 c5

D08

Alapin Variation, QGD

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.Nbd2

D09

Fianchetto Variation, Albin Countergambit; D09

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3

D10

Slav Defense; Czech Defense, QGD; D10

1.d4 d5 2.c4 c6

D10

Exchange Variation, Slav

1.d4 d5 2.c4 c6 3.cxd5

D10

Slav Pawn Game

1.d4 d5 2.c4 c6 3.e3

D10

Diemer Gambit, Slav

1.d4 d5 2.c4 c6 3.e4

D10

Alekhine Attack, Slav

1.d4 d5 2.c4 c6 3.Nc3 dxc4 4.e4

D10

Winawer Counter Gambit, Slav

1.d4 d5 2.c4 c6 3.Nc3 e5

D10

Anti-Winawer Gambit, Slav

1.d4 d5 2.c4 c6 3.Nc3 e5 4.e4

D11

Modern Line, Slav; D11

1.d4 d5 2.c4 c6 3.Nf3

D11

Slav Bishop's Game

1.d4 d5 2.c4 c6 3.Nf3 Bf5

D11

Bonet Gambit, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Bg5

D11

Quiet Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3

D11

Breyer Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nbd2

D12

Schallopp Defense, Slav; D12

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5

D12

Amsterdam Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Nc3

D12

Rotterdam Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Qb3 

D12

Landau Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Qb3 Qc8 7.Bd2 e6 8.Na3

D12

Pin Defense, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bg4

D13

Exchange Variation, Slav; D13

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5

D14

Symmetrical Line, Slav; D14

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5

D14

Trifunovic Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Qb3 Bb4

D15

Three Knights Variation, Slav; D15

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3

D15

Chameleon Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6

D15

Advance System, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 c5

D15

Two Knights Attack, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4

D15

Alekhine Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e3

D15

Alekhine Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e3 b5 6.a4 b4

D15

Geller Variation; Geller-Tolush Var, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e4

D15

Schlechter Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 g6

D15

Suchting Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 Qb6

D16

Alapin Variation, Slav; D16

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4

D16

Steiner Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bg4

D16

Soultanbeieff Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 e6

D16

Smyslov Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Na6

D17

Czech Defense; Open Slav Defense; D17

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5

D17

Krause Attack, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5

D17

Wiesbaden Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 e6

D17

Sharp Line, Wiesbaden Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 e6 7.f3 Bb4 8.e4

D17

Fazekas Gambit, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 Na6 7.e4

D17

Carlsbad Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 Nbd7 7.Nxc4 Qc7 8.g3 e5

D17

Baarn Variation, Slav; Bled Attack

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Nh4

D18

Dutch Variation, Slav; D18

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3

D18

Mareschall Variation, Slav; Lasker Variation

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 Na6

D19

Main Line, Czech Variation, Slav; D19

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O 9.Qe2

D20

Queen's Gambit Accepted; D20

1.d4 d5 2.c4 dxc4 

D20

Old Variation, QGA

1.d4 d5 2.c4 dxc4 3.e3

D20

Billinger Gambit, QGA

1.d4 d5 2.c4 dxc4 3.e3 e5 4.Bc4 exd4 5.Qb3 Qe7 6.a3

D20

Korchnoi Gambit, QGA

1.d4 d5 2.c4 dxc4 3.e3 e5 4.Bc4 exd4 5.Qb3 Qe7 6.Kf1

D20

Novikov Gambit, QGA

1.d4 d5 2.c4 dxc4 3.e3 e5 4.Bc4 exd4 5.Qb3 Qe7 6.Nd2

D20

Christensen Gambit, QGA

1.d4 d5 2.c4 dxc4 3.e3 e5 4.Bc4 exd4 5.Qb3 Qe7 6.Nf3

D20

Saduleto Variation, QGA; Central Variation, QGA

1.d4 d5 2.c4 dxc4 3.e4

D20

Greco Variation, QGA

1.d4 d5 2.c4 dxc4 3.e4 b5

D20

Rubinstein Variation, QGA 

1.d4 d5 2.c4 dxc4 3.e4 c5

D20

Yefimov Gambit, QGA

1.d4 d5 2.c4 dxc4 3.e4 c5 4.d5 b5

D20

Linares Variation, QGA

1.d4 d5 2.c4 dxc4 3.e4 c5 4.d5 Nf6 5.Nc3 b5

D20

McDonnell Defense, QGA

1.d4 d5 2.c4 dxc4 3.e4 e5

D20

Somov Gambit, QGA

1.d4 d5 2.c4 dxc4 3.e4 e5 4.Bxc4

D20

Versov; Betbeder; Schwartz Defense, QGA

1.d4 d5 2.c4 dxc4 3.e4 f5

D20

Modern Defense, QGA

1.d4 d5 2.c4 dxc4 3.e4 Nc6

D20

Alekhine System, QGA

1.d4 d5 2.c4 dxc4 3.e4 Nf6

D20

Gunsberg Defense; Prianishenmo Gambit, QGA

1.d4 d5 2.c4 dxc4 3.Nc3 c5 4.d5 Nf6 5.Nc3 e6 6.e4 exd5 7.e5

D21

Blackburne's Move, QGA; Normal Variation, QGA; D21

1.d4 d5 2.c4 dxc4 3.Nf3

D21

Alekhine Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 a6

D21

Slav Gambit, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 b5

D21

Gunsberg Defense, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 c5

D21

Prianishenmo Gambit, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 c5 4.d5 Nf6 5.Nc3 e6 6.e4 exd5 7.e5

D21

Rosenthal Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 e6

D21

Godes Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nd7

D22

D22

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3

D22

Haberditz Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 b5

D22

Alekhine Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4

D22

Borisenko-Furman Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e4

D23

D23

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6

D23

Mannheim Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Qa4+

D24

Showalter Variation, QGA; D24

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3

D24

Bogoljubow Defense, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3 a6 5.e4

D25

D25

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3

D25

Flohr; Winawer Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Be6

D25

Larsen; Janowski; Modern Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4

D25

Smyslov Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 g6

D25

Queen's Gambit Accepted Deferred

1.d4 d5 2.Nf3 Nf6 3.c4 dxc4

D26

Traditional System QGA; D26

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6

D26

Classical Defense, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5

D26

Steinitz Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O cxd4

D26

Development Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O Nc6

D27

Rubinstein Variation, QGA; D27

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6

D27

Furman Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.dxc5 Bxc5

D27

Russian Gambit, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.e4

D28

Alekhine System, Classical Defense, QGA; D28

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2

D28

Accelerated Fianchetto, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5

D28

Counter Fianchetto Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 Nc6 8.dxc5

D28

Four Knights Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 Nc6 8.Nc3

D29

D29

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7

D29

Smyslov Variation, Classical Defense, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 9.Rd1 Nbd7 10.Nc3 Bd6

D30

D30

1.d4 d5 2.c4 e6

D30

Pseudo-Tarrasch, QGD

1.d4 d5 2.c4 e6 3.Nf3 c5

D30

Bishop Attack, Tarrasch

1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.Bg5

D30

Anti-Noteboom Gambit, Semi-Slav

1.d4 d5 2.c4 e6 3.Nf3 c6 4.Nc3 dxc4 5.g3

D30

Traditional Variation, QGD

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5

D30

Vienna Variation, QGD 

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 Bb4+

D30

Duras Variation, QGD; Capablanca Variation

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 h6

D30

Hastings Variation, QGD

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 h6 5.Bxf6 Qxf6 6.Nc3 c6 7.Qb3

D30

Capablanca Variation, QGD

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nbd2

D30

Pseudo-Meran; Semi-Slav, QGD

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6

D30

Quiet Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2

D30

Semmering Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2 Nbd7 6.Bd3 c5

D31

Baltic Defense, QGD

1.d4 d5 2.c4 Bf5 3.cxd5 Bxb1 4.Qa4+ c6 5.dxc6 Nxc6

D31

Argentinian Gambit, QGD

1.d4 d5 2.c4 Bf5 3.cxd5 Bxb1 4.Qa4+ c6 5.dxc6 Nxc6 6.Rxb1 Qxd4

D31

Queen's Knight Variation, QGD; D31

1.d4 d5 2.c4 e6 3.Nc3

D31

Janowski Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 a6

D31

Alapin Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 b6

D31

Alatortsev; Petrosian, Charousek Var, QGD

1.d4 d5 2.c4 e6 3.Nc3 Be7

D31

Miladinovic Gambit, QGD

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.e4 dxe4 5.f3

D31

Semi-Slav Defense

1.d4 d5 2.c4 e6 3.Nc3 c6 

D31

Portisch Gambit, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 c6 4.e3 f5 5.g4

D31

Marshall Gambit, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4 

D31

Gunderam Gambit, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4 dxe4 5.f3

D31

Tolush Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4 dxe4 5.Nxe4 Bb4+ 6.Bd2 Qxd4 7.Bxb4 Qxe4+8.Be2 c5 9.Bxc5 Qxg2

D31

Noteboom Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4

D31

Abrahams; Noteboom; Klaus Junge Var, QGD

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e3 b5 7.Bd2 a5

D31

Anti-Noteboom Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.Bg5

D31

Beliavsky Line, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.Bg5 f6

D32

Tarrasch Defense, QGD; D32

1.d4 d5 2.c4 e6 3.Nc3 c5

D32

Schara-Hennig; Duisburg Gambit, QGD

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4

D32

Von Hennig Gambit, QGD

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4 5.Qxd4 Nc6 6.Qd1 exd5 7.Qxd5 Be6

D32

Tarrasch Gambit, QGD

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.dxc5 d4 6.Na4 b5

D32

Marshall Gambit, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.e4

D32

Two Knights Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3

D32

Grunfeld Gambit, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.dxc5 d4 7.Na4 b5

D32

Symmetrical Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.e3 Nf6 5.Nf3 Nc6

D33

Lodz; Schlecter; Rubinstein Var, QGD; D33

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3

D33

Folkestone; Swedish Var, QGD

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 c4

D33

Prague Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6

D33

Wagner Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Bg4

D34

D34

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7

D34

Rubinstein; Normal Position, QGD

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O

D34

Carlsbad Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5

D34

Endgame Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 Be6

D34

Bogoljubow Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 Be6 10.Rc1 c4

D34

Advance Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 c4

D34

Spassky Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 cxd4 10.Nxd4

D34

Reti Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.dxc5 Bxc5 10.Na4

D34

Classical Tarrasch Gambit

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.dxc5 d4

D35

D35

1.d4 d5 2.c4 e6 3.Nc3 Nf6

D35

Harrwitz; Rubinstein Var, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bf4

D35

Exchange Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5

D35

Positional Variation, Exchange Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5

D35

Saemisch Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Nf3 Nbd7 6.Bf4

D36

Reshevsky Variation, QGD; D36

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2

D37

Three Knights Variation, QGD; D37

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3

D37

Harrwitz Attack, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4

D38

Ragozin Variation, QGD; D38

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4

D38

Alekhine Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Qa4

D39

Vienna Variation, QGD; D39

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Bg5 dxc4

D40

Semi-Tarrasch Variation, QGD; D40

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5

D40

Pillsbury Variation, Semi-Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.Bg5

D41

D41

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 

D41

San Sebastian Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+

D42

D42

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3

D43

D43

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6

D43

Anti-Meran Gambit, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5

D44

Semi-Slav Defense Accepted; D44

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4

D44

Botvinnik Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5

D44

Ekstrom Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.exf6 gxh4 10.Ne5

D44

Lilienthal Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 hxg5 10.Bxg5 Nbd7

D44

Alatortsev System, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 Nd5

D44

Anti-Moscow Gambit

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 h6 6.Bh4

D44

Stonewall Defense, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Ne4 6.Bd3 f5

D44

Vienna Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 dxc4

D45

D45

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3

D45

Acclerated Meran, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 a6

D45

Normal Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7

D45

Rubinstein; anti-Meran

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Ne5

D45

Stoltz Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2

D45

Center Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2 Bd6 7.e4

D45

Mikhalchishin Line, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2 Bd6 7.e4 dxe4 8.Nxe4 Nxe4 9.Qxe4 e5 10.dxe5

D45

Shabalov Attack, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2 Bd6 7.g4

D46

D46

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3

D46

Romi Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Bb4

D46

Chigorin Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Bd6

D46

Bogoljubow Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Be7

D47

Meran Variation, QGD; D47

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4

D47

Lundin; Neo-Meran

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 b4

D47

Wade Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7

D47

Larsen Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7 9.e4 b4 10.Na4 c5

D48

Reynolds Variation, QGD; D48

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6

D48

Pirc Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 b4

D48

Old Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5

D48

Reynolds Variation, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 d5

D48

Old Meran Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.O-O

D49

Blumenfeld Variation, QGD; D49

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5

D49

Sozin Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 Nxe5

D49

Stahlberg Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 Nxe5 12.Nxe5 axb5

D50

Modern Variation, QGD; D50

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5

D50

Uhlmann Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Nf3 h6 6.Bh4 O-O 7.Rc1 dxc4

D50

Been & Koomen; Dutch & Peruvian

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5

D50

Pseudo-Tarrasch Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.cxd5 

D50

Canal; Venice Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.cxd5 Qb6

D50

Primitive Pillsbury Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.Nf3 cxd4 6.Qxd4

D51

Knight Defense, QGD; D51

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7

D51

Manhattan; Westphalia Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 Bb4

D51

Westphalian Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 Bb4 6.Nf3 c5

D51

Alekhine Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.Nf3 c6 6.e4

D51

Alekhine Gambit, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.Nf3 h6 6.Bh4 dxc4

D52

D52

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3

D52

Cambridge Springs; Pillsbury Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5

D52

Bogoljubov Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2

D52

Argentine Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2 O-O 9.Bh4

D53

D53

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7

D53

Heral Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6

D53

Lasker Defense, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 Ne4

D54

Neo-Orthodox Variation, QGD; D54

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Rc1

D55

D55

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3

D55

Pillsbury Attack, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 b6 7.Bd3 Bb7 8.cxd5 exd5 9.Ne5

D55

Neo Orthodox Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6

D55

Anti-Tartakower Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bxf6

D55

Petrosian Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bxf6 Bxf6 8.Rc1 c6 9.Bd3 Nd7 10.O-O dxc4

D56

D56

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4

D56

Lasker Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7

D56

Teichmann Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.Qc2

D57

D57

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.cxd5

D57

Bernstein Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.cxd5 Nxc3 10.bxc3

D58

Tartakower Variation, QGD; D58

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6

D59

Exchange Variation, Tartakower Defense, QGD; D59

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.cxd5 Nxd5

D60

Orthodox Variation, QGD; D60

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7

D60

Botvinnik Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Bd3

D60

Rauzer Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qb3

D61

Rubinstein Variation, Orthodox Defense, QGD; D61

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qc2

D62

D62

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qc2 c5 8.cxd5

D63

D63

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1

D63

Henneberger; Swiss Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 a6

D63

Capablanca Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 b6 8.cxd5 exd5 9.Bb5

D63

Pillsbury Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 b6 8.cxd5 exd5 9.Bd3

D63

Rubinstein Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6

D64

Janowski Variation, Orthodox Defense, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.h4

D64

Rubinstein Attack, Orthodox Defense, QGD;  D64

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2

D65

D65

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2 a6 9.cxd5

D66

D66

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3

D66

Fianchetto Variation, Orthodox Defense, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 b5

D67

Capablanca Freeing Maneuver, QGD; D67

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5

D67

Alekhine Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.Ne4

D67

Classical Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3

D68

D68

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5

D69

D69

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 13.dxe5

D70

King's Indian Defense; West Indian Defense; D70

1.d4 Nf6 2.c4 g6

D70

Anti-Grunfeld Variation

1.d4 Nf6 2.c4 g6 3.d5  

D70

Danube Gambit; Adorjan Gambit

1.d4 Nf6 2.c4 g6 3.d5 b5

D70

Danube; Donau Gambit

1.d4 Nf6 2.c4 g6 3.d5 b5 4.cxb5 a6 5.bxa6 c6

D70

Nimzovich Attack; Anti-Grunfeld; Alekhine Variation

1.d4 Nf6 2.c4 g6 3.f3

D70

Goglidze Attack

1.d4 Nf6 2.c4 g6 3.f3 d5

D70

Leko Gambit

1.d4 Nf6 2.c4 g6 3.f3 e5

D70

Kemeri; Neo-Grunfeld

1.d4 Nf6 2.c4 g6 3.g3 d5

D70

Lutikov Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.f3

D70

Murey Attack, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.f3 c5 5.cxd5 Nxd5 6.Na4

D70

Neo-Grunfeld Defense

1.d4 Nf6 2.c4 g6 3.Nf3 d5

D70

Iago Defense

1.d4 Nf6 2.c4 Nc6

D71

Counterthrust Variation

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7

D71

Exchange Variation, Neo-Grunfeld

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5

D71

D71

1.d4 Nf6 2.c4 Nc6 3.g3 d5

D72

D72

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5 6.e4 Nb6

D73

D73

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3

D74

Delayed Exchange Variation, Neo-Grunfeld; D74

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O

D75

D75

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O c5

D76

D76

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O Nb6

D77

Classical Variation, Neo-Grunfeld; D77

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O

D78

Original Defesne, Neo-Grunfeld; D78

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6

D78

Modern Defense, Neo-Grunfeld

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O dxc4

D78

Polgar Variation, Neo-Grunfeld

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O Nc6

D79

D79

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6 7.cxd5

D79

Ultra-delayed Exchange Variation, Neo-Grunfeld

1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6 7.cxd5 cxd5

D80

Grunfeld Defense; D80

1.d4 Nf6 2.c4 g6 3.Nc3 d5

D80

Stockholm Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5

D80

Lundin Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Nxe4 dxc3 6.Qd2 c5

D80

Makogonov Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.b4

D80

Opocensky Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.Bd2

D80

Paris Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.Bd3

D80

Schlechter Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.Bd3 c6

D80

Flohr Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.Bd3 c6 7.O-O Bf5

D80

Smyslov Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.Bd3 c6 7.O-O Bg4

D80

Vienna Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.Qb3

D80

Pachman Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.Qb3 dxc4 7.Bxc4 Nbd7 8.Ng5

D80

Botvinnik Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 O-O 6.Qb3 e6

D80

Schlechter Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 c6

D80

Kemeri Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.g3

D80

Gibbon Gambit; Grunfeld Spike

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.g4

D80

Zaitsev Gambit, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.h4

D81

Accelerated Russian Variation, Grunfeld; D81

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3

D82

Brinckmann Attack, Grunfeld; D82

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 

D83

Grunfeld Gambit; D83

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O

D83

Capablanca Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Rc1

D83

Botvinnik Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Rc1 c5 7.dxc5 Be6

D83

Reshevsky Gambit, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Rc1 c5 7.dxc5 Qa5

D84

D84

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.cxd5 Nxd5

D85

Exchange Variation, Grunfeld; D85

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5

D85

Exchange Variation, Grunfeld;

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3

D85

Modern Main Line, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3

D85

Kramnik's Line, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.h3

D85

Kemeri Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.g3

D85

Nadanian Attack

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.Na4

D86

Classical Main Line, Grunfeld; D86

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4

D86

Simagin Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 b6 9.h4 Ba6

D86

Simagin Improved Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 Nc6

D86

Larsen Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 Qd7

D86

Larsen Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 Qd7 9.O-O b6

D87

Spassky Variation, Grunfeld; D87

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5

D87

Seville Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3

D88

D88

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4

D89

D89

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4 Bg4 12.f3 Na5 13.Bd3

D89

Sokolsky Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4 Bg4 12.f3 Na5 13.Bd3 Be6 14.d5

D90

Three Knights Variation, Grunfeld; D90

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3

D90

Flohr Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qa4+

D90

Slav Fianchetto

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Nf6 5.Nc3 g6

D91

Petrosian System, Grunfeld; D91

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5

D92

Hungarian Attack, Grunfeld; D92

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4

D93

D93

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 6.e3

D94

Burille Variation, Grunfeld; D94

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3

D94

Makogonov Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.b4

D94

Opocensky Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd2

D95

D95

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Qb3

D96

Russian Variation, Grunfeld; D96

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3

D97

D97

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4

D97

Hungarian Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 a6

D97

Levenfish Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 b6

D97

Szabo (Boleslavsky) Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 c6

D97

Prins Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Na6

D97

Simagin (Byrne) Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Nc6

D98

Smyslov Variation, Grunfeld; D98

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4

D98

Keres Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4 8.Be2 Nfd7 9.Be2 Nb6 10.Qd3 Nc6 11.O-O-O Qc8

D99

D99

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4 8.Be3 Nfd7 9.Qb3

D99

Yugoslav Variation, Grunfeld

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4 8.Be3 Nfd7 9.Qb3 c5

E00

East Indian Defense; E00

1.d4 Nf6 2.c4 e6

E00

Seirawan Attack

1.d4 Nf6 2.c4 e6 3.Bg5

E00

Catalan Opening

1.d4 Nf6 2.c4 e6 3.g3

E00

Hungarian Gambit, Catalan

1.d4 Nf6 2.c4 e6 3.g3 e5

E00

Devin Gambit, Catalan

1.d4 Nf6 2.c4 e6 3.g4

E01

E01

1.d4 Nf6 2.c4 e6 3.g3 d5

E02

E02

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4

E03

E03

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4

E03

Alekhine Variation, Catalan

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6 7.Qc2

E04

Open Defense, Catalan; E04

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3

E05

Classical Line, Catalan; E05

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Be7

E05

Modern Sharp Variation, Catalan

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Nc6 6.Qa4 Bb4+

E06

Closed Variation, Catalan

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2

E06

E06

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7

E06

Tarrasch Defense, Catalan

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 c5 5.Nf3 Nc6

E07

E07

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7

E07

Botvinnik Variation, Catalan

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Nc3 c6 8.Qd3

E08

E08

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2

E08

Zagoriansky Variation, Catalan

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Rd1 b6 9.a4

E09

E09

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2

E09

Sokolsky Variation, Catalan

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2 b6 8.Nbd2 b6 9.b3 a5 10.Bb2 Ba6

E10

Anti-Nimzo-Indian; E10

1.d4 Nf6 2.c4 e6 3.Nf3

E10

Dzindzi-Indian Defense

1.d4 Nf6 2.c4 e6 3.Nf3 a6

E10

Blumenfeld Variation

1.d4 Nf6 2.c4 e6 3.Nf3 c5

E10

Blumenfeld Countergambit

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5

E10

Dus-Chotimursky Variation

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.Bg5

E10

Spielmann Variation, Blumenfeld

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.Bg5 exd5 6.cxd5 h6

E10

Blumenfeld Countergambit Accepted

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.dxe6 fxe6 6.cxb5 d5

E10

Rubinstein Variation, Blumenfeld

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.e4

E10

Dory (Doery) Defense

1.d4 Nf6 2.c4 e6 3.Nf3 Ne4

E11

Bogoljubow Defense; Bogo-Indian Defense; E11

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+

E11

Monticelli Trap

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Bxd2+ 5.Qxd2 b6 6.g3 Bb7 7.Bg2 O-O 8.Nc3 Ne4 9.Qc2 Nxc3 10.Bg5

E11

Nimzovich Variation, Bogo-Indian

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7

E11

Grunfeld Variation, Bogo-Indian

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2

E12

Queen's Indian Defense; E12

1.d4 Nf6 2.c4 e6 3.Nf3 b6

E12

Petrosian Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3

E12

Farago Defense, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Ba6 5.Qc2 Bb7

E12

Murey Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Bb7 5.Nc3 d5 6.cxd5 Nxd5 7.Qc2 c5 8.e4 Nxc3 9.bxc3 Nc6 10.Bb2 cxd4 11.cxd4 Rc8 12.Rd1 Bd6

E12

Miles Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Bf4

E12

Kasparov Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3

E12

Kasparov-Petrosian Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3

E12

Polovodin Gambit, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 d5 6.cxd5 Nxd5 7.e4

E12

Hedgehog Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 g6

E12

Botvinnik Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 g5 7.Bg3 Nh5

E13

E13

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 Bb4

E14

Spassky System, QID; E14

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3

E14

Averbakh Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 c5 6.O-O Be7 7.b3 O-O 8.Bb2 cxd4 9.Nxd4

E15

Fianchetto System, QID; E15

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3

E15

Nimzovich Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6

E15

Quiet Line, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3

E15

Nimzovich Attack, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qa4+

E15

Timman's Line, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qb3

E15

Saemisch Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 c5

E16

Fianchetto Traditional, QID; E16

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7

E16

Capablanca Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+

E16

Yates Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 a5

E16

Riumin Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 Be7

E16

Buerger Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 c5 6.d5 exd5 7.Ng5

E16

Rubinstein Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 c5 6.d5 exd5 7.Nh4

E16

Fine Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Qc8 6.O-O c5 7.d5

E17

Traditional Variation, QID; E17

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7

E17

Anti-Queen's Indian System

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3

E17

Opocensky Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3 Ne4 7.Bd2

E17

Classical Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O

E17

Euwe Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.b3

E17

Taimanov Gambit, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.d5 exd5 8.Nd4

E17

Polugaevsky Gambit, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.d5 exd5 8.Nh4

E17

Kramnik Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Re1

E18

E18

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3

E18

Tiviakov Defense, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Na6

E19

E19

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2

E20

E20

1.d4 Nf6 2.c4 e6 3.Nc3

E20

Nimzo-Indian Defense

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4

E20

Kmoch Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3

E20

Steiner Variation, Nimzo-Indian; Romanishin Variation

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3

E20

Romanishin Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.g3 O-O 6.Bg2

E20

English Hybrid, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.g3 O-O 6.Bg2 cxd4 7.Nxd4 d5 8.cxd5 Nxd5

E20

Ragozin Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 d5

E21

Three Knights Variation, Nimzo-Indian; E21

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3

E21

Korchnoi Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.d5

E21

Shocron Gambit, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.d5 b5

E21

Euwe Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.d5 Ne4

E22

Spielmann Variation, Nimzo-Indian; E22

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3

E23

Romanovsky Gambit, Nimzo-Indian; E23

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6

E23

San Remo Variation, Nimzo-Indian; Stahlberg Variation

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxc5

E23

Stahlberg Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxc5 8.Qc2 f5 9.g3

E23

Carlsbad Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxd2

E23

Stahlberg Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxd2 8.Nxd2 O-O 9.O-O-O

E24

Saemisch Variation, Nimzo-Indian; E24

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3

E24

Accelerated Saemisch Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3

E24

Botvinnik Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.e3 O-O 8.cxd5 Nxd5

E25

E25

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5

E25

Keres Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5 8.dxc5

E25

Romanovsky Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5 8.dxc5 f5

E26

Saemisch Variation, Nimzo-Indian; E26

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3

E26

O'Kelly Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 b6

E26

Capablanca Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 Nc6 7.Bd3 O-O 8.Ne2 b6 9.e4 Ne8

E27

E27

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O

E28

E28

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3

E29

E29

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 c5 7.Bd3 Nc6

E29

Capablanca Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 c5 7.Bd3 Nc6 8.Ne2 b6 9.e4 Ne8

E30

Leningrad Variation, Nimzo-Indian; E30

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5

E30

Averbakh Gambit, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 b5

E31

Benoni Defense, Nimzo-Indian; E31

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6

E32

Classical Variation, Nimzo-Indian; E32

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2

E33

Milner-Barry, Zurich Variation, Nimzo-Indian; E33

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6

E33

Milner-Barry Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6

E33

Old Zurich Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6 6.a3

E33

Vitolinsh-Adorjan Gambit, Nimzo Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b5

E33

Keres Defense, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b6

E34

Noa Variation, Nimzo-Indian; E34

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5

E35

E35

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.cxd5 exd5

E35

Romanishin Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.cxd5 exd5 6.Nf3 Qf5

E35

Beliavsky Gambit, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.cxd5 exd5 6.Nf3 Qf5 7.Qd1 e5

E36

E36

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3

E36

Botvinnik Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Bxc3+ 6.Qxc3 Nc6

E37

E37

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Bxc3+ 6.Qxc3 Ne4

E37

San Remo Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Bxc3+ 6.Qxc3 Ne4 7.Qc2 Nc6 8.e3 e5

E38

Berlin Variation, Nimzo-Indian; E38

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5

E38

Steiner Variation, Nimzo-Indian 

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 Bxc3+

E39

Pirc Variation, Nimzo-Indian; E39

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O

E40

Rubinstein Variation, Nimzo-Indian; E40

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3

E40

Keres Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 d5 5.a3 Bxc3+ 6.bxc3 c5 7.cxd5 exd5 8.Bd3 O-O 9.Ne2 b6

E40

Taimanov Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 Nc6

E40

Ragozin Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 Nc6 5.Nf3 O-O 6.Bd3 d5 7.O-O dxc4

E41

Huebner Variation, Nimzo-Indian; E41

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5

E41

Huebner Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3

E41

Panov Attack, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 cxd4 6.exd4 d5

E42

Rubinstein Variation, Nimzo-Indian; E42

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2

E42

Sherbakov Attack, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 cxd4 6.exd4 O-O 7.c5

E43

St. Petersburg Variation, Nimzo-Indian; E43

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6

E44

Fischer Variation, Nimzo-Indian; E44

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2

E45

Bronstein Variation, Nimzo-Indian; E45; Byrne Variation

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Ba6

E46

Normal Variation, Nimzo-Indian; E46

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O

E46

Reshevsky Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Ne2

E46

Simagin Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Ne2 d5 6.a3 Bd6

E46

Reshevsky Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nge2

E46

Simagin Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nge2 d5 6.a3 Bd6

E47

Bishop Attack, Nimzo-Indian; E47

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3

E48

Classical Defense, Nimzo-Indian; E48

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5

E48

Olafsson Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O dxc4 8.Bxc4 b6 9.Qe2 Bb7 10.Rd1 Qc8

E48

Bronstein Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O dxc4 8.Bxc4 Bd7

E48

Bronstein Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O dxc4 8.Bxc4 Nbd7 9.Ne2

E48

Smyslov Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O dxc4 8.Bxc4 Qe7

E49

Botvinnik System, Nimzo-Indian; E49

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3

E50

E50

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3

E50

Huebner Deferred, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 c5

E51

Ragozin Variation, Nimzo-Indian; E51

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5

E51

Saemisch Deferred, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.a3

E52

Schlechter Defense, Nimzo-Indian; E52

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6

E53

Bernstein Defense; Gligoric System; E53

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5

E53

Keres Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O b6

E54

E54

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4

E55

Bronstein Variation, Nimzo-Indian; E55

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7

E55

Smyslov Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Qe7

E56

Bernstein Variation, Nimzo-Indian; E56

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6

E57

E57

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 dxc4 9.Bxc4 cxd4

E58

E58

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3 9.bxc3

E59

E59

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3 9.bxc3 dxc4 10.Bxc4

E60

King's Indian Defense; West Indian Defense; E60

1.d4 Nf6 2.c4 g6

E60

Fianchetto Variation, KID

1.d4 Nf6 2.c4 g6 3.g3

E60

Counterthrust Variation

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5

E60

Kemeri Variation

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.Nf3 O-O 7.O-O c5

E60

Yugoslav Variation

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.Nf3 O-O 6.Nc3 c5

E60

Bronstein Variation

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.Nf3 O-O 6.Nc3 c6 7.O-O Qa5

E60

Panno Variation

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.Nf3 O-O 6.Nc3 Nc6 7.O-O a6 8.h3 Rb8

E60

Spassky Variation

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.Nf3 O-O 6.Nc3 Nc6 7.O-O Bf5

E60

Simagin Variation

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.Nf3 O-O 6.Nc3 Nc6 7.O-O Bg4

E60

Szabo Variation

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.Nf3 O-O 6.Nc3 Nc6 7.O-O e5

E60

Panno System

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d6 5.Nf3 O-O 6.O-O Nc6 7.d5 Na5

E60

Pomar Variation, KID

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nge2

E60

King's Knight Variation, KID

1.d4 Nf6 2.c4 g6 3.Nf3

E60

Santassiere Variation, KID

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.b4

E61

E61

1.d4 Nf6 2.c4 g6 3.Nc3

E61

Smyslov Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Bg5

E61

Smyslov Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.Bg5

E62

Delayed Fianchetto, KID; E62

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3

E62

Larsen Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Bf5

E62

Kavalek Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Qa5

E62

Benjamin Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Qb6

E62

Carlsbad Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6

E62

Lesser Simagin (Spassky) Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bf5

E62

Simagin Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bg4

E62

Uhlmann-Szabo System, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O e5

E63

Panno Variation, KID; E63

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O a6

E64

Yugoslav Variation, KID; E64

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5

E65

E65

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O

E66

E66

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.d5

E67

Debrecen Defense, KID; E67

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7

E68

E68

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4

E69

E69

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6 9.h3

E70

Normal Variation, KID; E70

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4

E70

Accelerated Averbakh Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bg5

E70

Kramer Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.Nge2

E71

Makogonov Variation, KID; E71

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.h3

E72

Deferred Fianchetto, KID; E72

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.g3

E72

Pomar System, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.g3 O-O 6.Bg2 e5 7.Nge2

E73

E73

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2

E73

Semi-Averbakh System, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Be3

E73

Averbakh Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5

E73

Spanish Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 a6

E73

Flexible Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 h6

E73

Burgess Line, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 Na6 7.Qd2 c6

E73

Geller Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 Nbd7

E74

Benoni Defense, KID; E74

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5

E75

E75

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 c6

E76

Four Pawns Attack, KID; E76

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4

E76

Six Pawns Attack, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 c5 6.d5 O-O 7.Be2 e6 8.dxe6 fxe6 9.g4 Nc6 10.h4

E76

Modern Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 Na6

E76

Dynamic Attack, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Nf3 c5 7.d5

E77

Six Pawns Attack, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6

E77

E77

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2

E77

Florentine Gambit, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.d5 e6 8.Nf3 exd5 9.e5

E78

Fluid Attack, KID; E78

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.Nf3

E79

Exchange Variation, Four Pawns Attack, KID; E79

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.Nf3 cxd4 8.Nxd4 Nc6 9.Be3

E80

Saemisch Variation, KID; E80

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3

E80

Bronstein Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 e5 6.d5 Nh5 7.Be3 Na6 8.Qd2 Qh4+ 9.g3 Nxg3 10.Qf2 Nxf1 11.Qxh4 Nxe3 12.Kf2 Nxc4

E81

Normal Defesne, Sameisch Variation, KID; E81

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O

E81

Byrne Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c6 7.Bd3 a6

E81

Steiner Attack, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5

E81

Bobotsov-Korchnoi-Petrosian Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Nge2

E82

Double Fianchetto, KID; E82

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 b6

E83

Yates Defense, KID; E83

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6

E83

Panno Formation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6

E83

Ruban Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 Rb8

E84

E84

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 Rb8

E85

Orthodox Variation, KID; E85

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5

E86

E86

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.Nge2 c6

E87

Closed Variation, KID; E87

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5

E87

Bronstein Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 Nh5 8.Qd2 Qh4+ 9.g3 Nxg3 10.Qf2 Nxf1

E88

E88

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6

E89

E89

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6 8.Nge2

E90

E90

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3

E90

Larsen Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be3

E90

Zinnowitz Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Bg5

E91

Orthodox Variation, KID; E91

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2

E91

Kazakh Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Na6

E92

E92

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5

E92

Gligoric-Taimanov Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.Be3

E92

Petrosian Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5

E92

Stein Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 a5

E93

E93

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7

E93

Keres Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7 8.Bg5 h6 9.Bh4 g5 10.Bg3 Nh5 11.h4

E94

E94

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O

E94

Ukranian Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O a5

E94

Donner Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O c6

E94

Glek Defense, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Na6

E95

E95

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Re1

E96

E96

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Re1 c6 9.Bf1 a5

E97

Aronin-Taimanov Variation, KID; E97

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6

E97

Normal Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7

E97

Bayonet Attack, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.b4

E97

Yepishin's Line, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.b4 Nh5 10.Qc2

E97

Sokolov's Line, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.b4 Nh5 10.Re1

E97

Korchnoi Attack, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Bd2

E98

E98

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1

E98

Kozul Gambit, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1 Nd7 10.Be3 f5

E99

Benko Attack, KID; E99

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1 Nd7 10.f3

E99

Benko Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1 Nd7 10.f3 f5 11.g4