A00 Polish (Sokolsky) opening
b2b4 
 ¯ Tuebingen variation
b2b4 g8h6 
 ¯ Outflank variation
b2b4 c7c6 
A00 Benko's opening
g2g3 
A00 Lasker simul special
g2g3 h7h5 
 ¯ reversed Alekhine
g2g3 e7e5 g1f3 
A00 Grob's attack
g2g4 
 ¯ spike attack
g2g4 d7d5 f1g2 c7c6 g4g5 
 ¯ Fritz gambit
g2g4 d7d5 f1g2 c8g4 c2c4 
 ¯ Romford counter-gambit
g2g4 d7d5 f1g2 c8g4 c2c4 d5d4 
A00 Clemenz (Mead's, Basman's or de Klerk's) opening
h2h3 
A00 Global opening
h2h3 e7e5 a2a3 
A00 Amar (Paris) opening
g1h3 
A00 Amar gambit
g1h3 d7d5 g2g3 e7e5 f2f4 c8h3 f1h3 e5f4 
A00 Dunst (Sleipner, Heinrichsen) opening
b1c3 
A00 Dunst (Sleipner,Heinrichsen) opening
b1c3 e7e5 
A00 Battambang opening
b1c3 e7e5 a2a3 
A00 Novosibirsk opening
b1c3 c7c5 d2d4 c5d4 d1d4 b8c6 d4h4 
A00 Anderssen's opening
a2a3 
A00 Ware (Meadow Hay) opening
a2a4 
A00 Crab opening
a2a4 e7e5 h2h4 
A00 Saragossa opening
c2c3 
A00 Mieses opening
d2d3 
A00 Mieses opening
d2d3 e7e5 
A00 Valencia opening
d2d3 e7e5 b1d2 
A00 Venezolana opening
d2d3 c7c5 b1c3 b8c6 g2g3 
A00 Van't Kruijs opening
e2e3 
A00 Amsterdam attack
e2e3 e7e5 c2c4 d7d6 b1c3 b8c6 b2b3 g8f6 
A00 Gedult's opening
f2f3 
A00 Hammerschlag (Fried fox/Pork chop opening)
f2f3 e7e5 e1f2 
A00 Anti-Borg (Desprez) opening
h2h4 
A00 Durkin's attack
b1a3 
A01 Nimzovich-Larsen attack
b2b3 
 ¯ modern variation
b2b3 e7e5 
 ¯ Indian variation
b2b3 g8f6 
 ¯ classical variation
b2b3 d7d5 
 ¯ English variation
b2b3 c7c5 
 ¯ Dutch variation
b2b3 f7f5 
 ¯ Polish variation
b2b3 b7b5 
 ¯ symmetrical variation
b2b3 b7b6 
A02 Bird's opening
f2f4 
 ¯ From gambit
f2f4 e7e5 
 ¯ From gambit, Lasker variation
f2f4 e7e5 f4e5 d7d6 e5d6 f8d6 g1f3 g7g5 
 ¯ From gambit, Lipke variation
f2f4 e7e5 f4e5 d7d6 e5d6 f8d6 g1f3 g8h6 d2d4 
A02 Bird's opening, Swiss gambit
f2f4 f7f5 e2e4 f5e4 b1c3 g8f6 g2g4 
 ¯ Hobbs gambit
f2f4 g7g5 
A03 Bird's opening
f2f4 d7d5 
A03 Mujannah opening
f2f4 d7d5 c2c4 
 ¯ Williams gambit
f2f4 d7d5 e2e4 
 ¯ Lasker variation
f2f4 d7d5 g1f3 g8f6 e2e3 c7c5 
A04 Reti opening
g1f3 
A04 Reti v Dutch
g1f3 f7f5 
 ¯ Pirc-Lisitsin gambit
g1f3 f7f5 e2e4 
 ¯ Lisitsin gambit deferred
g1f3 f7f5 d2d3 g8f6 e2e4 
A04 Reti opening
g1f3 d7d6 
 ¯ Wade defence
g1f3 d7d6 e2e4 c8g4 
 ¯ Herrstroem gambit
g1f3 g7g5 
A05 Reti opening
g1f3 g8f6 
 ¯ King's Indian attack, Spassky's variation
g1f3 g8f6 g2g3 b7b5 
 ¯ King's Indian attack
g1f3 g8f6 g2g3 g7g6 
 ¯ King's Indian attack, Reti-Smyslov variation
g1f3 g8f6 g2g3 g7g6 b2b4 
A06 Reti opening
g1f3 d7d5 
 ¯ old Indian attack
g1f3 d7d5 d2d3 
A06 Santasiere's folly
g1f3 d7d5 b2b4 
A06 Tennison (Lemberg, Zukertort) gambit
g1f3 d7d5 e2e4 
 ¯ Nimzovich-Larsen attack
g1f3 d7d5 b2b3 
 ¯ King's Indian attack (Barcza system)
g1f3 d7d5 g2g3 
 ¯ King's Indian attack, Yugoslav variation
g1f3 d7d5 g2g3 g8f6 f1g2 c7c6 e1g1 c8g4 
 ¯ King's Indian attack, Keres variation
g1f3 d7d5 g2g3 c8g4 f1g2 b8d7 
 ¯ King's Indian attack
g1f3 d7d5 g2g3 g7g6 
 ¯ King's Indian attack, Pachman system
g1f3 d7d5 g2g3 g7g6 f1g2 f8g7 e1g1 e7e5 d2d3 g8e7 
 ¯ King's Indian attack (with ...c5)
g1f3 d7d5 g2g3 c7c5 
 ¯ King's Indian attack
g1f3 d7d5 g2g3 c7c5 f1g2 
 ¯ King's Indian attack, French variation
g1f3 d7d5 g2g3 c7c5 f1g2 b8c6 e1g1 e7e6 d2d3 g8f6 b1d2 f8e7 e2e4 e8g8 f1e1 
A09 Reti opening
g1f3 d7d5 c2c4 
 ¯ advance variation
g1f3 d7d5 c2c4 d5d4 
A09 Reti accepted
g1f3 d7d5 c2c4 d5c4 
 ¯ Keres variation
g1f3 d7d5 c2c4 d5c4 e2e3 c8e6 
A10 English opening
c2c4 
A10 English opening
c2c4 g7g6 
 ¯ Adorjan defence
c2c4 g7g6 e2e4 e7e5 
 ¯ Jaenisch gambit
c2c4 b7b5 
 ¯ Anglo-Dutch defense
c2c4 f7f5 
 ¯ Caro-Kann defensive system
c2c4 c7c6 
 ¯ Caro-Kann defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 
 ¯ Torre defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 g2g3 c8g4 
 ¯ London defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 g2g3 c8f5 
 ¯ Caro-Kann defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 
 ¯ Bled variation
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 g7g6 
 ¯ New York (London) defensive system
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 c8f5 
 ¯ Capablanca's variation
c2c4 c7c6 g1f3 d7d5 b2b3 g8f6 c1b2 c8g4 
 ¯ Caro-Kann defensive system, Bogolyubov variation
c2c4 c7c6 g1f3 d7d5 b2b3 c8g4 
A13 English opening
c2c4 e7e6 
 ¯ Romanishin gambit
c2c4 e7e6 g1f3 g8f6 g2g3 a7a6 f1g2 b7b5 
 ¯ Agincourt variation
c2c4 e7e6 g1f3 d7d5 
 ¯ Wimpey system
c2c4 e7e6 g1f3 d7d5 b2b3 g8f6 c1b2 c7c5 e2e3 
 ¯ Agincourt variation
c2c4 e7e6 g1f3 d7d5 g2g3 
 ¯ Kurajica defence
c2c4 e7e6 g1f3 d7d5 g2g3 c7c6 
 ¯ Neo-Catalan
c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 
 ¯ Neo-Catalan accepted
c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 d5c4 
 ¯ Neo-Catalan declined
c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7 e1g1 
 ¯ Symmetrical, Keres defence
c2c4 e7e6 g1f3 d7d5 g2g3 g8f6 f1g2 f8e7 e1g1 c7c5 c4d5 f6d5 b1c3 b8c6 
A15 English, 1...Nf6 (Anglo-Indian defense)
c2c4 g8f6 
A15 English orang-utan
c2c4 g8f6 b2b4 
A15 English opening
c2c4 g8f6 g1f3 
A16 English opening
c2c4 g8f6 b1c3 
 ¯ Anglo-Gruenfeld defense
c2c4 g8f6 b1c3 d7d5 
 ¯ Anglo-Gruenfeld, Smyslov defense
c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 g7g6 f1g2 d5c3 
 ¯ Anglo-Gruenfeld, Czech defense
c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g2g3 g7g6 f1g2 d5b6 
 ¯ Anglo-Gruenfeld defense
c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3 
 ¯ Anglo-Gruenfeld defense, Korchnoi variation
c2c4 g8f6 b1c3 d7d5 c4d5 f6d5 g1f3 g7g6 g2g3 f8g7 f1g2 e7e5 
A17 English opening
c2c4 g8f6 b1c3 e7e6 
 ¯ Queens Indian formation
c2c4 g8f6 b1c3 e7e6 g1f3 b7b6 
 ¯ Queens Indian, Romanishin variation
c2c4 g8f6 b1c3 e7e6 g1f3 b7b6 e2e4 c8b7 f1d3 
 ¯ Nimzo-English opening
c2c4 g8f6 b1c3 e7e6 g1f3 f8b4 
 ¯ Mikenas-Carls variation
c2c4 g8f6 b1c3 e7e6 e2e4 
 ¯ Mikenas-Carls, Flohr variation
c2c4 g8f6 b1c3 e7e6 e2e4 d7d5 e4e5 
 ¯ Mikenas-Carls, Kevitz variation
c2c4 g8f6 b1c3 e7e6 e2e4 b8c6 
 ¯ Mikenas-Carls, Sicilian variation
c2c4 g8f6 b1c3 e7e6 e2e4 c7c5 
A20 English opening
c2c4 e7e5 
A20 English, Nimzovich variation
c2c4 e7e5 g1f3 
A20 English, Nimzovich, Flohr variation
c2c4 e7e5 g1f3 e5e4 
A21 English opening
c2c4 e7e5 b1c3 
A21 English, Troeger defence
c2c4 e7e5 b1c3 d7d6 g2g3 c8e6 f1g2 b8c6 
A21 English, Keres variation
c2c4 e7e5 b1c3 d7d6 g2g3 c7c6 
A21 English opening
c2c4 e7e5 b1c3 d7d6 g1f3 
A21 English, Smyslov defence
c2c4 e7e5 b1c3 d7d6 g1f3 c8g4 
A21 English, Kramnik-Shirov counterattack
c2c4 e7e5 b1c3 f8b4 
A22 English opening
c2c4 e7e5 b1c3 g8f6 
 ¯ Bellon gambit
c2c4 e7e5 b1c3 g8f6 g1f3 e5e4 f3g5 b7b5 
 ¯ Carls' Bremen system
c2c4 e7e5 b1c3 g8f6 g2g3 
 ¯ Bremen, reverse dragon
c2c4 e7e5 b1c3 g8f6 g2g3 d7d5 
 ¯ Bremen, Smyslov system
c2c4 e7e5 b1c3 g8f6 g2g3 f8b4 
 ¯ Bremen system, Keres variation
c2c4 e7e5 b1c3 g8f6 g2g3 c7c6 
 ¯ Bremen system with ...g6
c2c4 e7e5 b1c3 g8f6 g2g3 g7g6 
 ¯ Sicilian reversed
c2c4 e7e5 b1c3 b8c6 
 ¯ closed system
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 
 ¯ closed, Taimanov variation
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 d7d6 g1e2 g8h6 
 ¯ closed, Hort variation
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 d7d6 g1e2 c8e6 
 ¯ closed, 5.Rb1
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 a1b1 
 ¯ closed, 5.Rb1 Taimanov variation
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 a1b1 g8h6 
 ¯ closed system (without ...d6)
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 
 ¯ closed system
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 
 ¯ Botvinnik system
c2c4 e7e5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 e2e4 
 ¯ three knights system
c2c4 e7e5 b1c3 b8c6 g1f3 
 ¯ four knights system
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 
 ¯ Nenarokov variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 d2d4 e5d4 f3d4 f8b4 c1g5 h7h6 g5h4 b4c3 b2c3 c6e5 
 ¯ Bradley Beach variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 d2d4 e5e4 
 ¯ four knights, Nimzovich variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 e2e4 
 ¯ four knights, Marini variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 a2a3 
 ¯ four knights, Capablanca variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 d2d3 
 ¯ four knights, 4.e3
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 e2e3 
 ¯ four knights, Stean variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 e2e3 f8b4 d1c2 e8g8 c3d5 f8e8 c2f5 
 ¯ four knights, Romanishin variation
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 e2e3 f8b4 d1c2 b4c3 
 ¯ four knights, kingside fianchetto
c2c4 e7e5 b1c3 b8c6 g1f3 g8f6 g2g3 
 ¯ symmetrical variation
c2c4 c7c5 
 ¯ symmetrical, hedgehog system
c2c4 c7c5 g1f3 g8f6 g2g3 b7b6 f1g2 c8b7 e1g1 e7e6 b1c3 f8e7 
 ¯ symmetrical, hedgehog, flexible formation
c2c4 c7c5 g1f3 g8f6 g2g3 b7b6 f1g2 c8b7 e1g1 e7e6 b1c3 f8e7 d2d4 c5d4 d1d4 d7d6 f1d1 a7a6 b2b3 b8d7 
 ¯ symmetrical, Benoni formation
c2c4 c7c5 g1f3 g8f6 d2d4 
 ¯ symmetrical variation
c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6 
 ¯ symmetrical variation
c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6 b1c3 b8c6 
 ¯ symmetrical, Geller variation
c2c4 c7c5 g1f3 g8f6 d2d4 c5d4 f3d4 e7e6 b1c3 b8c6 g2g3 d8b6 
 ¯ symmetrical variation
c2c4 c7c5 b1c3 
 ¯ symmetrical, three knights system
c2c4 c7c5 b1c3 g8f6 g1f3 d7d5 c4d5 f6d5 
 ¯ symmetrical variation
c2c4 c7c5 b1c3 g8f6 g2g3 
 ¯ symmetrical, Rubinstein system
c2c4 c7c5 b1c3 g8f6 g2g3 d7d5 c4d5 f6d5 f1g2 d5c7 
 ¯ symmetrical variation
c2c4 c7c5 b1c3 b8c6 
 ¯ symmetrical, four knights system
c2c4 c7c5 b1c3 b8c6 g1f3 g8f6 
 ¯ symmetrical variation
c2c4 c7c5 b1c3 b8c6 g2g3 
 ¯ ultra-symmetrical variation
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 
 ¯ symmetrical, Botvinnik system reversed
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e3 e7e5 
 ¯ symmetrical, Botvinnik system
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 e2e4 
 ¯ symmetrical variation
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 
 ¯ symmetrical, Botvinnik system reversed
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 e7e5 
 ¯ symmetrical variation
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 
 ¯ symmetrical, main line with d3
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 d2d3 
 ¯ symmetrical, main line with b3
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 b2b3 
 ¯ symmetrical, main line with d4
c2c4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 g1f3 g8f6 e1g1 e8g8 d2d4 
A40 Queen's pawn
d2d4 
 ¯ Lundin (Kevitz-Mikenas) defence
d2d4 b8c6 
 ¯ Charlick (Englund) gambit
d2d4 e7e5 
 ¯ Englund gambit
d2d4 e7e5 d4e5 b8c6 g1f3 d8e7 d1d5 f7f6 e5f6 g8f6 
 ¯ English defence
d2d4 b7b6 
A40 Polish defence
d2d4 b7b5 
A40 Queen's pawn
d2d4 e7e6 
 ¯ Keres defence
d2d4 e7e6 c2c4 b7b6 
 ¯ Franco-Indian (Keres) defence
d2d4 e7e6 c2c4 f8b4 
A40 Modern defence
d2d4 g7g6 
A40 Beefeater defence
d2d4 g7g6 c2c4 f8g7 b1c3 c7c5 d4d5 g7c3 b2c3 f7f5 
A41 Queen's Pawn
d2d4 d7d6 
 ¯ Tartakower (Wade) variation
d2d4 d7d6 g1f3 c8g4 
A41 Old Indian defence
d2d4 d7d6 c2c4 
A41 Modern defence
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 
 ¯ Rossolimo variation
e2e4 g7g6 d2d4 f8g7 g1f3 d7d6 c2c4 c8g4 
 ¯ Averbakh system
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 e2e4 
A42 Pterodactyl defence
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 e2e4 c7c5 g1f3 d8a5 
 ¯ Averbakh system, Randspringer variation
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 e2e4 f7f5 
 ¯ Averbakh system, Kotov variation
d2d4 d7d6 c2c4 g7g6 b1c3 f8g7 e2e4 b8c6 
A43 Old Benoni defence
d2d4 c7c5 
 ¯ Franco-Benoni defence
d2d4 c7c5 d4d5 e7e6 e2e4 
 ¯ Mujannah formation
d2d4 c7c5 d4d5 f7f5 
A43 Old Benoni defence
d2d4 c7c5 d4d5 g8f6 
A43 Woozle defence
d2d4 c7c5 d4d5 g8f6 b1c3 d8a5 
A43 Old Benoni defence
d2d4 c7c5 d4d5 g8f6 g1f3 
A43 Hawk (Habichd) defence
d2d4 c7c5 d4d5 g8f6 g1f3 c5c4 
A43 Old Benoni defence
d2d4 c7c5 d4d5 d7d6 
 ¯ Schmid's system
d2d4 c7c5 d4d5 d7d6 b1c3 g7g6 
A44 Old Benoni defence
d2d4 c7c5 d4d5 e7e5 
A44 Semi-Benoni (`blockade variation')
d2d4 c7c5 d4d5 e7e5 e2e4 d7d6 
A45 Queen's pawn game
d2d4 g8f6 
 ¯ Bronstein gambit
d2d4 g8f6 g2g4 
A45 Canard opening
d2d4 g8f6 f2f4 
A45 Paleface attack
d2d4 g8f6 f2f3 
A45 Blackmar-Diemer gambit
d2d4 g8f6 f2f3 d7d5 e2e4 
A45 Gedult attack
d2d4 g8f6 f2f3 d7d5 g2g4 
A45 Trompovsky attack (Ruth, Opovcensky opening)
d2d4 g8f6 c1g5 
A46 Queen's pawn game
d2d4 g8f6 g1f3 
 ¯ Torre attack
d2d4 g8f6 g1f3 e7e6 c1g5 
 ¯ Torre attack, Wagner gambit
d2d4 g8f6 g1f3 e7e6 c1g5 c7c5 e2e4 
 ¯ Yusupov-Rubinstein system
d2d4 g8f6 g1f3 e7e6 e2e3 
A46 Doery defence
d2d4 g8f6 g1f3 f6e4 
A47 Queen's Indian defence
d2d4 g8f6 g1f3 b7b6 
 ¯ Marienbad system
d2d4 g8f6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 
 ¯ Marienbad system, Berg variation
d2d4 g8f6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 c2c4 c5d4 d1d4 
 ¯ East Indian defence
d2d4 g8f6 g1f3 g7g6 
 ¯ Torre attack
d2d4 g8f6 g1f3 g7g6 c1g5 
 ¯ London system
d2d4 g8f6 g1f3 g7g6 c1f4 
 ¯ fianchetto without c4
d2d4 g8f6 g1f3 g7g6 g2g3 
A50 Queen's pawn game
d2d4 g8f6 c2c4 
A50 Kevitz-Trajkovich defence
d2d4 g8f6 c2c4 b8c6 
A50 Queen's Indian accelerated
d2d4 g8f6 c2c4 b7b6 
A51 Budapest defence declined
d2d4 g8f6 c2c4 e7e5 
 ¯ Fajarowicz variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6e4 
 ¯ Fajarowicz, Steiner variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6e4 d1c2 
A52 Budapest defence
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 
 ¯ Adler variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 g1f3 
 ¯ Rubinstein variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 c1f4 
 ¯ Alekhine variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4 
 ¯ Alekhine, Abonyi variation
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4 g4e5 f2f4 e5c6 
 ¯ Alekhine variation, Balogh gambit
d2d4 g8f6 c2c4 e7e5 d4e5 f6g4 e2e4 d7d6 
A53 Old Indian defence
d2d4 g8f6 c2c4 d7d6 
 ¯ Janowski variation
d2d4 g8f6 c2c4 d7d6 b1c3 c8f5 
 ¯ Ukrainian variation
d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 
 ¯ Dus-Khotimirsky variation
d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 e2e3 b8d7 f1d3 
 ¯ Ukrainian variation, 4.Nf3
d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 g1f3 
 ¯ main line
d2d4 g8f6 c2c4 d7d6 b1c3 e7e5 g1f3 b8d7 e2e4 
A56 Benoni defence
d2d4 g8f6 c2c4 c7c5 
A56 Benoni defence, Hromodka system
d2d4 g8f6 c2c4 c7c5 d4d5 d7d6 
A56 Vulture defence
d2d4 g8f6 c2c4 c7c5 d4d5 f6e4 
A56 Czech Benoni defence
d2d4 g8f6 c2c4 c7c5 d4d5 e7e5 
 ¯ King's Indian system
d2d4 g8f6 c2c4 c7c5 d4d5 e7e5 b1c3 d7d6 e2e4 g7g6 
A57 Benko gambit
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 
A57 Benko gambit half accepted
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 
 ¯ Zaitsev system
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b1c3 
 ¯ Nescafe Frappe attack
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b1c3 a6b5 e2e4 b5b4 c3b5 d7d6 f1c4 
A58 Benko gambit accepted
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 
 ¯ Nd2 variation
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 g1f3 g7g6 f3d2 
 ¯ fianchetto variation
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 g1f3 g7g6 g2g3 
 ¯ 7.e4
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4 
 ¯ Ne2 variation
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4 a6f1 e1f1 g7g6 g1e2 
A59 Benko gambit
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4 a6f1 e1f1 g7g6 g2g3 
 ¯ main line
d2d4 g8f6 c2c4 c7c5 d4d5 b7b5 c4b5 a7a6 b5a6 c8a6 b1c3 d7d6 e2e4 a6f1 e1f1 g7g6 g2g3 f8g7 f1g2 e8g8 g1f3 
A60 Benoni defence
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 
A61 Benoni defence
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 
 ¯ Uhlmann variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 c1g5 
 ¯ Nimzovich (knight's tour) variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 f3d2 
 ¯ fianchetto variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 g2g3 
 ¯ fianchetto variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 
 ¯ fianchetto, 9...Nbd7
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 e1g1 b8d7 
 ¯ fianchetto, 11...Re8
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 g1f3 g7g6 g2g3 f8g7 f1g2 e8g8 e1g1 b8d7 f3d2 a7a6 a2a4 f8e8 
 ¯ 6.e4
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 
 ¯ pawn storm variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 
 ¯ Mikenas variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 e4e5 
 ¯ Taimanov variation
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 f1b5 
 ¯ four pawns attack
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 g1f3 e8g8 
 ¯ four pawns attack, main line
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 f2f4 f8g7 g1f3 e8g8 f1e2 f8e8 
 ¯ classical with e4 and Nf3
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 
 ¯ classical without 9.O-O
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 
 ¯ classical, 8.Bg5
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 c1g5 
 ¯ classical without 9.O-O
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 
 ¯ classical, 9.O-O
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 
 ¯ classical, 9...a6, 10.a4
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 a7a6 a2a4 
 ¯ classical with ...a6 and 10...Bg4
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 a7a6 a2a4 c8g4 
 ¯ classical, 9...Re8
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 
 ¯ classical, 9...Re8, 10.Nd2
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2 
 ¯ classical with ...Re8 and ...Na6
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2 b8a6 
 ¯ classical, 11.f3
d2d4 g8f6 c2c4 c7c5 d4d5 e7e6 b1c3 e6d5 c4d5 d7d6 e2e4 g7g6 g1f3 f8g7 f1e2 e8g8 e1g1 f8e8 f3d2 b8a6 f2f3 
A80 Dutch
d2d4 f7f5 
A80 Dutch, Spielmann gambit
d2d4 f7f5 b1c3 g8f6 g2g4 
A80 Dutch, Manhattan (Alapin, Ulvestad) variation
d2d4 f7f5 d1d3 
A80 Dutch, Von Pretzel gambit
d2d4 f7f5 d1d3 e7e6 g2g4 
A80 Dutch, Korchnoi attack
d2d4 f7f5 h2h3 
A80 Dutch, Krejcik gambit
d2d4 f7f5 g2g4 
A80 Dutch, 2.Bg5 variation
d2d4 f7f5 c1g5 
A81 Dutch defence
d2d4 f7f5 g2g3 
A81 Dutch defence, Blackburne variation
d2d4 f7f5 g2g3 g8f6 f1g2 e7e6 g1h3 
A81 Dutch defence
d2d4 f7f5 g2g3 g8f6 f1g2 g7g6 
 ¯ Leningrad, Basman system
d2d4 f7f5 g2g3 g7g6 f1g2 f8g7 g1f3 c7c6 e1g1 g8h6 
 ¯ Leningrad, Karlsbad variation
d2d4 f7f5 g2g3 g7g6 f1g2 f8g7 g1h3 
 ¯ Staunton gambit
d2d4 f7f5 e2e4 
 ¯ Balogh defence
d2d4 f7f5 e2e4 d7d6 
 ¯ Staunton gambit
d2d4 f7f5 e2e4 f5e4 
 ¯ Staunton gambit, Tartakower variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 g2g4 
 ¯ Staunton gambit, Staunton's line
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 
 ¯ Staunton gambit, Alekhine variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 g7g6 h2h4 
 ¯ Staunton gambit, Lasker variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 g7g6 f2f3 
 ¯ Staunton gambit, Chigorin variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 c7c6 
 ¯ Staunton gambit, Nimzovich variation
d2d4 f7f5 e2e4 f5e4 b1c3 g8f6 c1g5 b7b6 
A84 Dutch defence
d2d4 f7f5 c2c4 
 ¯ Bladel variation
d2d4 f7f5 c2c4 g7g6 b1c3 g8h6 
A84 Dutch defence
d2d4 f7f5 c2c4 e7e6 
A84 Dutch defence, Rubinstein variation
d2d4 f7f5 c2c4 e7e6 b1c3 
 ¯ Staunton gambit deferred
d2d4 f7f5 c2c4 e7e6 e2e4 
A84 Dutch defence
d2d4 f7f5 c2c4 g8f6 
A85 Dutch with c4 & Nc3
d2d4 f7f5 c2c4 g8f6 b1c3 
A86 Dutch with c4 & g3
d2d4 f7f5 c2c4 g8f6 g2g3 
 ¯ Hort-Antoshin system
d2d4 f7f5 c2c4 g8f6 g2g3 d7d6 f1g2 c7c6 b1c3 d8c7 
 ¯ Leningrad variation
d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 
 ¯ Leningrad, main variation
d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 f1g2 f8g7 g1f3 
 ¯ Leningrad, main variation with c6
d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 f1g2 f8g7 g1f3 e8g8 e1g1 d7d6 b1c3 c7c6 
 ¯ Leningrad, main variation with Nc6
d2d4 f7f5 c2c4 g8f6 g2g3 g7g6 f1g2 f8g7 g1f3 e8g8 e1g1 d7d6 b1c3 b8c6 
A90 Dutch defence
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 
 ¯ Dutch-Indian (Nimzo-Dutch) variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8b4 
A90 Dutch-Indian, Alekhine variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8b4 c1d2 b4e7 
A91 Dutch defence
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 
A92 Dutch defence
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 
A92 Dutch defence, Alekhine variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 f6e4 
 ¯ stonewall variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 
 ¯ stonewall with Nc3
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3 
 ¯ stonewall, Botwinnik variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b2b3 
 ¯ stonewall with Ba3
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b2b3 c7c6 c1a3 
 ¯ stonewall with Nc3
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3 c7c6 
 ¯ stonewall: Chekhover variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d5 b1c3 c7c6 d1c2 d8e8 c1g5 
 ¯ classical variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 
 ¯ Ilyin-Genevsky variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 
 ¯ Ilyin-Genevsky, Winter variation
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 f1e1 
 ¯ Ilyin-Genevsky variation with Qc2
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 d1c2 
 ¯ Ilyin-Genevsky variation with b3
d2d4 f7f5 c2c4 g8f6 g2g3 e7e6 f1g2 f8e7 g1f3 e8g8 e1g1 d7d6 b1c3 d8e8 b2b3 
B00 King's pawn opening
e2e4 
B00 Hippopotamus defence
e2e4 g8h6 d2d4 g7g6 c2c4 f7f6 
B00 Corn stalk defence
e2e4 a7a5 
B00 Lemming defence
e2e4 b8a6 
B00 Fred
e2e4 f7f5 
B00 Barnes defence
e2e4 f7f6 
B00 Fried fox defence
e2e4 f7f6 d2d4 e8f7 
B00 Carr's defence
e2e4 h7h6 
B00 Reversed Grob (Borg/Basman defence/macho Grob)
e2e4 g7g5 
B00 St. George (Baker) defence
e2e4 a7a6 
B00 Owen defence
e2e4 b7b6 
B00 Guatemala defence
e2e4 b7b6 d2d4 c8a6 
 ¯ Nimzovich defence
e2e4 b8c6 
 ¯ Nimzovich defence, Wheeler gambit
e2e4 b8c6 b2b4 c6b4 c2c3 b4c6 d2d4 
 ¯ Nimzovich defence
e2e4 b8c6 g1f3 
 ¯ Colorado counter
e2e4 b8c6 g1f3 f7f5 
 ¯ Nimzovich defence
e2e4 b8c6 d2d4 
 ¯ Nimzovich defence, Marshall gambit
e2e4 b8c6 d2d4 d7d5 e4d5 d8d5 b1c3 
 ¯ Nimzovich defence, Bogolyubov variation
e2e4 b8c6 d2d4 d7d5 b1c3 
 ¯ Neo-Mongoloid defence
e2e4 b8c6 d2d4 f7f6 
B01 Scandinavian (centre counter) defence
e2e4 d7d5 
B01 Scandinavian defence, Lasker variation
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8g4 h2h3 
B01 Scandinavian defence
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8f5 
B01 Scandinavian defence, Gruenfeld variation
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 g8f6 g1f3 c8f5 f3e5 c7c6 g2g4 
 ¯ Anderssen counter-attack
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 
 ¯ Anderssen counter-attack orthodox attack
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 d4e5 f8b4 c1d2 b8c6 g1f3 
 ¯ Anderssen counter-attack, Goteborg system
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 g1f3 
 ¯ Anderssen counter-attack, Collijn variation
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 d2d4 e7e5 g1f3 c8g4 
B01 Scandinavian, Mieses-Kotrvc gambit
e2e4 d7d5 e4d5 d8d5 b1c3 d5a5 b2b4 
 ¯ Pytel-Wade variation
e2e4 d7d5 e4d5 d8d5 b1c3 d5d6 
B01 Scandinavian defence
e2e4 d7d5 e4d5 g8f6 
 ¯ Icelandic gambit
e2e4 d7d5 e4d5 g8f6 c2c4 e7e6 
B01 Scandinavian gambit
e2e4 d7d5 e4d5 g8f6 c2c4 c7c6 
B01 Scandinavian defence
e2e4 d7d5 e4d5 g8f6 d2d4 
 ¯ Marshall variation
e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 
 ¯ Kiel variation
e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 c2c4 d5b4 
 ¯ Richter variation
e2e4 d7d5 e4d5 g8f6 d2d4 g7g6 
B02 Alekhine's defence
e2e4 g8f6 
 ¯ Scandinavian variation
e2e4 g8f6 b1c3 d7d5 
 ¯ Spielmann variation
e2e4 g8f6 b1c3 d7d5 e4e5 f6d7 e5e6 
 ¯ Maroczy variation
e2e4 g8f6 d2d3 
 ¯ Krejcik variation
e2e4 g8f6 f1c4 
 ¯ Mokele Mbembe (Buecker) variation
e2e4 g8f6 e4e5 f6e4 
 ¯ Brooklyn defence
e2e4 g8f6 e4e5 f6g8 
B02 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 
 ¯ Kmoch variation
e2e4 g8f6 e4e5 f6d5 f1c4 d5b6 c4b3 c7c5 d2d3 
 ¯ Saemisch attack
e2e4 g8f6 e4e5 f6d5 b1c3 
 ¯ Welling variation
e2e4 g8f6 e4e5 f6d5 b2b3 
B02 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 c2c4 
 ¯ Steiner variation
e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 b2b3 
 ¯ two pawns' (Lasker's) attack
e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5 
 ¯ two pawns' attack, Mikenas variation
e2e4 g8f6 e4e5 f6d5 c2c4 d5b6 c4c5 b6d5 f1c4 e7e6 b1c3 d7d6 
B03 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 d2d4 
 ¯ O'Sullivan gambit
e2e4 g8f6 e4e5 f6d5 d2d4 b7b5 
B03 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 
 ¯ Balogh variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 f1c4 
B03 Alekhine's defence
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 
 ¯ exchange variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 e5d6 
 ¯ exchange, Karpov variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 e5d6 c7d6 g1f3 g7g6 f1e2 f8g7 e1g1 e8g8 h2h3 b8c6 b1c3 c8f5 c1f4 
 ¯ four pawns attack
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 
 ¯ four pawns attack, Korchnoi variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 c8f5 b1c3 e7e6 g1f3 f8e7 f1e2 e8g8 e1g1 f7f6 
 ¯ four pawns attack, 6...Nc6
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 
 ¯ four pawns attack, Ilyin-Genevsky var.
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 g1f3 c8g4 e5e6 f7e6 c4c5 
 ¯ four pawns attack, 7.Be3
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 c1e3 
 ¯ four pawns attack, Tartakower variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 d6e5 f4e5 b8c6 c1e3 c8f5 b1c3 e7e6 g1f3 d8d7 f1e2 e8c8 e1g1 f8e7 
 ¯ four pawns attack, Planinc variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 g7g5 
 ¯ four pawns attack, fianchetto variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 g7g6 
 ¯ four pawns attack, Trifunovic variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 c2c4 d5b6 f2f4 c8f5 
 ¯ modern variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 
 ¯ modern, Larsen variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 d6e5 
 ¯ modern, Schmid variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 d5b6 
 ¯ modern, fianchetto variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 g7g6 
 ¯ modern, Keres variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 g7g6 f1c4 d5b6 c4b3 f8g7 a2a4 
 ¯ modern variation, 4...Bg4
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 
 ¯ modern, Flohr variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 f1e2 c7c6 
 ¯ modern, Panov variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 h2h3 
 ¯ modern, Alekhine variation
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 c2c4 
 ¯ modern, Vitolins attack
e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 c8g4 c2c4 d5b6 d4d5 
B06 Robatsch (modern) defence
e2e4 g7g6 
B06 Norwegian defence
e2e4 g7g6 d2d4 g8f6 e4e5 f6h5 g2g4 h5g7 
B06 Robatsch (modern) defence
e2e4 g7g6 d2d4 f8g7 
 ¯ three pawns attack
e2e4 g7g6 d2d4 f8g7 f2f4 
B06 Robatsch defence
e2e4 g7g6 d2d4 f8g7 b1c3 
 ¯ Gurgenidze variation
e2e4 g7g6 d2d4 f8g7 b1c3 c7c6 f2f4 d7d5 e4e5 h7h5 
B06 Robatsch (modern) defence
e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 
 ¯ two knights variation
e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 g1f3 
 ¯ two knights, Suttles variation
e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 g1f3 c7c6 
 ¯ Pseudo-Austrian attack
e2e4 g7g6 d2d4 f8g7 b1c3 d7d6 f2f4 
B07 Pirc defence
e2e4 d7d6 d2d4 g8f6 b1c3 
 ¯ Ufimtsev-Pytel variation
e2e4 d7d6 d2d4 g8f6 b1c3 c7c6 
B07 Pirc defence
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 
 ¯ 150 attack
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 c1e3 c7c6 d1d2 
 ¯ Sveshnikov system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g2g3 
 ¯ Holmov system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1c4 
 ¯ Byrne variation
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 c1g5 
B07 Pirc defence
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1e2 
 ¯ Chinese variation
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1e2 f8g7 g2g4 
 ¯ bayonet (Mariotti) attack
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f1e2 f8g7 h2h4 
 ¯ Geller's system
e2e4 g7g6 d2d4 f8g7 g1f3 d7d6 c2c3 
 ¯ classical (two knights) system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 
 ¯ classical (two knights) system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 
 ¯ classical, h3 system
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 h2h3 
 ¯ classical system, 5.Be2
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 g1f3 f8g7 f1e2 
 ¯ Austrian attack
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 
 ¯ Austrian attack
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 
 ¯ Austrian attack, 6.e5
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 e4e5 
 ¯ Austrian attack, 6.Be3
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 c1e3 
 ¯ Austrian attack, 6.Bd3
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 e8g8 f1d3 
 ¯ Austrian attack, dragon formation
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 g1f3 c7c5 
 ¯ Austrian attack, Ljubojevic variation
e2e4 d7d6 d2d4 g8f6 b1c3 g7g6 f2f4 f8g7 f1c4 
B10 Caro-Kann defence
e2e4 c7c6 
 ¯ Hillbilly attack
e2e4 c7c6 f1c4 
 ¯ anti-Caro-Kann defence
e2e4 c7c6 c2c4 
 ¯ anti-anti-Caro-Kann defence
e2e4 c7c6 c2c4 d7d5 
 ¯ closed (Breyer) variation
e2e4 c7c6 d2d3 
B10 Caro-Kann defence
e2e4 c7c6 b1c3 
 ¯ Goldman (Spielmann) variation
e2e4 c7c6 b1c3 d7d5 d1f3 
 ¯ two knights variation
e2e4 c7c6 b1c3 d7d5 g1f3 
 ¯ two knights, 3...Bg4
e2e4 c7c6 b1c3 d7d5 g1f3 c8g4 
B12 Caro-Kann defence
e2e4 c7c6 d2d4 
B12 de Bruycker defence
e2e4 c7c6 d2d4 b8a6 b1c3 a6c7 
B12 Caro-Masi defence
e2e4 c7c6 d2d4 g8f6 
B12 Caro-Kann defence
e2e4 c7c6 d2d4 d7d5 
 ¯ Tartakower (fantasy) variation
e2e4 c7c6 d2d4 d7d5 f2f3 
 ¯ 3.Nd2
e2e4 c7c6 d2d4 d7d5 b1d2 
 ¯ Edinburgh variation
e2e4 c7c6 d2d4 d7d5 b1d2 d8b6 
 ¯ advance variation
e2e4 c7c6 d2d4 d7d5 e4e5 
 ¯ advance, Short variation
e2e4 c7c6 d2d4 d7d5 e4e5 c8f5 c2c3 e7e6 f1e2 
 ¯ exchange variation
e2e4 c7c6 d2d4 d7d5 e4d5 
 ¯ exchange, Rubinstein variation
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 f1d3 b8c6 c2c3 g8f6 c1f4 
 ¯ Panov-Botvinnik attack
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 
 ¯ Panov-Botvinnik, Gunderam attack
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 c4c5 
 ¯ Panov-Botvinnik attack
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 
 ¯ Panov-Botvinnik, Herzog defence
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d5c4 d4d5 c6a5 
 ¯ Panov-Botvinnik, normal variation
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 e7e6 
 ¯ Panov-Botvinnik, Czerniak variation
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d8a5 
 ¯ Panov-Botvinnik, Reifir (Spielmann) variation
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 b8c6 c1g5 d8b6 
 ¯ Panov-Botvinnik attack, 5...e6
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 e7e6 
 ¯ Panov-Botvinnik attack, 5...g6
e2e4 c7c6 d2d4 d7d5 e4d5 c6d5 c2c4 g8f6 b1c3 g7g6 
B15 Caro-Kann defence
e2e4 c7c6 d2d4 d7d5 b1c3 
 ¯ Gurgenidze counter-attack
e2e4 c7c6 d2d4 d7d5 b1c3 b7b5 
 ¯ Gurgenidze system
e2e4 c7c6 d2d4 d7d5 b1c3 g7g6 
 ¯ Rasa-Studier gambit
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 f2f3 
B15 Caro-Kann defence
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 
 ¯ Alekhine gambit
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 f1d3 
 ¯ Tartakower (Nimzovich) variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 e7f6 
 ¯ Forgacs variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 e7f6 f1c4 
 ¯ Bronstein-Larsen variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 g8f6 e4f6 g7f6 
 ¯ Steinitz variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7 
 ¯ classical variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 
 ¯ classical, Flohr variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 g1h3 
 ¯ classical, Maroczy attack
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 f2f4 
 ¯ classical, 6.h4
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 h2h4 
 ¯ classical, 7...Nd7
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 h2h4 h7h6 g1f3 b8d7 
 ¯ classical, Spassky variation
e2e4 c7c6 d2d4 d7d5 b1c3 d5e4 c3e4 c8f5 e4g3 f5g6 h2h4 h7h6 g1f3 b8d7 h4h5 
B20 Sicilian defence
e2e4 c7c5 
 ¯ Gloria variation
e2e4 c7c5 c2c4 d7d6 b1c3 b8c6 g2g3 h7h5 
 ¯ Steinitz variation
e2e4 c7c5 g2g3 
 ¯ wing gambit
e2e4 c7c5 b2b4 
 ¯ wing gambit, Santasiere variation
e2e4 c7c5 b2b4 c5b4 c2c4 
 ¯ wing gambit, Marshall variation
e2e4 c7c5 b2b4 c5b4 a2a3 
 ¯ wing gambit, Marienbad variation
e2e4 c7c5 b2b4 c5b4 a2a3 d7d5 e4d5 d8d5 c1b2 
 ¯ wing gambit, Carlsbad variation
e2e4 c7c5 b2b4 c5b4 a2a3 b4a3 
 ¯ Keres variation (2.Ne2)
e2e4 c7c5 g1e2 
 ¯ Grand Prix attack
e2e4 c7c5 f2f4 
 ¯ Smith-Morra gambit
e2e4 c7c5 d2d4 
 ¯ Andreaschek gambit
e2e4 c7c5 d2d4 c5d4 g1f3 e7e5 c2c3 
 ¯ Smith-Morra gambit
e2e4 c7c5 d2d4 c5d4 c2c3 
 ¯ Smith-Morra gambit, Chicago defence
e2e4 c7c5 d2d4 c5d4 c2c3 d4c3 b1c3 b8c6 g1f3 d7d6 f1c4 e7e6 e1g1 a7a6 d1e2 b7b5 c4b3 a8a7 
 ¯ Alapin's variation (2.c3)
e2e4 c7c5 c2c3 
 ¯ 2.c3, Heidenfeld variation
e2e4 c7c5 c2c3 g8f6 e4e5 f6d5 g1f3 b8c6 b1a3 
 ¯ closed
e2e4 c7c5 b1c3 
 ¯ closed, Korchnoi variation
e2e4 c7c5 b1c3 e7e6 g2g3 d7d5 
 ¯ closed, 2...Nc6
e2e4 c7c5 b1c3 b8c6 
 ¯ chameleon variation
e2e4 c7c5 b1c3 b8c6 g1e2 
 ¯ Grand Prix attack
e2e4 c7c5 b1c3 b8c6 f2f4 
 ¯ Grand Prix attack, Schofman variation
e2e4 c7c5 b1c3 b8c6 f2f4 g7g6 g1f3 f8g7 f1c4 e7e6 f4f5 
 ¯ closed
e2e4 c7c5 b1c3 b8c6 g2g3 
 ¯ closed, Smyslov variation
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 e7e6 c1e3 c6d4 c3e2 
 ¯ closed
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 
 ¯ closed, 6.Ne2 e5 (Botvinnik)
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 g1e2 e7e5 
 ¯ closed, 6.f4
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 f2f4 
 ¯ closed, 6.f4 e5 (Botvinnik)
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 f2f4 e7e5 
 ¯ closed, 6.Be3
e2e4 c7c5 b1c3 b8c6 g2g3 g7g6 f1g2 f8g7 d2d3 d7d6 c1e3 
B27 Sicilian defence
e2e4 c7c5 g1f3 
 ¯ Stiletto (Althouse) variation
e2e4 c7c5 g1f3 d8a5 
 ¯ Quinteros variation
e2e4 c7c5 g1f3 d8c7 
 ¯ Katalimov variation
e2e4 c7c5 g1f3 b7b6 
 ¯ Hungarian variation
e2e4 c7c5 g1f3 g7g6 
 ¯ Acton extension
e2e4 c7c5 g1f3 g7g6 c2c4 f8h6 
 ¯ O'Kelly variation
e2e4 c7c5 g1f3 a7a6 
 ¯ Nimzovich-Rubinstein variation
e2e4 c7c5 g1f3 g8f6 
 ¯ Nimzovich-Rubinstein; Rubinstein counter-gambit
e2e4 c7c5 g1f3 g8f6 e4e5 f6d5 b1c3 e7e6 c3d5 e6d5 d2d4 b8c6 
B30 Sicilian defence
e2e4 c7c5 g1f3 b8c6 
 ¯ Nimzovich-Rossolimo attack (without ...d6)
e2e4 c7c5 g1f3 b8c6 f1b5 
 ¯ Nimzovich-Rossolimo attack (with ...g6, without ...d6)
e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 
 ¯ Nimzovich-Rossolimo attack, Gurgenidze variation
e2e4 c7c5 g1f3 b8c6 f1b5 g7g6 e1g1 f8g7 f1e1 e7e5 b2b4 
B32 Sicilian defence
e2e4 c7c5 g1f3 b8c6 d2d4 
 ¯ Flohr variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 d8c7 
 ¯ Nimzovich variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 d7d5 
 ¯ Labourdonnais-Loewenthal variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 e7e5 
 ¯ Labourdonnais-Loewenthal (Kalashnikov) variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 e7e5 d4b5 d7d6 
B33 Sicilian defence
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 
 ¯ Pelikan (Lasker/Sveshnikov) variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 
 ¯ Pelikan, Bird variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 c8e6 
 ¯ Pelikan, Chelyabinsk variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5 
 ¯ Sveshnikov variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 d4b5 d7d6 c1g5 a7a6 b5a3 b7b5 g5f6 g7f6 c3d5 f6f5 
 ¯ accelerated fianchetto, exchange variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 d4c6 
 ¯ accelerated fianchetto, modern variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3 
 ¯ accelerated fianchetto, modern variation with Bc4
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 b1c3 f8g7 c1e3 g8f6 f1c4 
 ¯ accelerated fianchetto, Maroczy bind
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 
 ¯ accelerated fianchetto, Gurgenidze variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 g8f6 b1c3 c6d4 d1d4 d7d6 
 ¯ accelerated fianchetto, Maroczy bind, 5...Bg7
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 
 ¯ accelerated fianchetto, Simagin variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 d4c2 d7d6 f1e2 g8h6 
 ¯ accelerated fianchetto, Maroczy bind, 6.Be3
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 c1e3 
 ¯ accelerated fianchetto, Breyer variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g7g6 c2c4 f8g7 c1e3 g8f6 b1c3 f6g4 
B40 Sicilian defence
e2e4 c7c5 g1f3 e7e6 
 ¯ Marshall variation
e2e4 c7c5 g1f3 e7e6 d2d4 d7d5 
B40 Sicilian defence
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 
 ¯ Anderssen variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 
 ¯ Pin variation (Sicilian counter-attack)
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4 
 ¯ Pin, Jaffe variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4 f1d3 e6e5 
 ¯ Pin, Koch variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 g8f6 b1c3 f8b4 e4e5 
 ¯ Kan variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 
 ¯ Kan, Maroczy bind (Reti variation)
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 c2c4 
 ¯ Kan, Maroczy bind - Bronstein variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 c2c4 g8f6 b1c3 f8b4 f1d3 b8c6 d3c2 
 ¯ Kan, 5.Bd3
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 
 ¯ Kan, Gipslis variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 g8f6 e1g1 d7d6 c2c4 g7g6 
 ¯ Kan, Polugaievsky variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 f8c5 
 ¯ Kan, Swiss cheese variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 f1d3 g7g6 
 ¯ Kan, 5.Nc3
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 a7a6 b1c3 
B44 Sicilian defence
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 
B44 Sicilian, Szen (`anti-Taimanov') variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5 
B44 Sicilian, Szen, hedgehog variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5 d7d6 c2c4 g8f6 b1c3 a7a6 b5a3 f8e7 f1e2 e8g8 e1g1 b7b6 
B44 Sicilian, Szen variation, Dely-Kasparov gambit
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 d4b5 d7d6 c2c4 g8f6 b1c3 a7a6 b5a3 d6d5 
 ¯ Taimanov variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 
 ¯ Taimanov, American attack
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 g8f6 d4b5 f8b4 b5d6 
 ¯ Taimanov variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 a7a6 
 ¯ Taimanov (Bastrikov) variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 
 ¯ Taimanov variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 c1e3 
 ¯ Taimanov variation
e2e4 c7c5 g1f3 e7e6 d2d4 c5d4 f3d4 b8c6 b1c3 d8c7 c1e3 a7a6 f1e2 
B50 Sicilian
e2e4 c7c5 g1f3 d7d6 
 ¯ wing gambit deferred
e2e4 c7c5 g1f3 d7d6 b2b4 
 ¯ Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack
e2e4 c7c5 g1f3 d7d6 f1b5 
 ¯ Canal-Sokolsky attack, 3...Bd7
e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 
 ¯ Canal-Sokolsky attack, Bronstein gambit
e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 e1g1 b8c6 c2c3 g8f6 d2d4 
 ¯ Canal-Sokolsky attack, Sokolsky variation
e2e4 c7c5 g1f3 d7d6 f1b5 c8d7 b5d7 d8d7 c2c4 
B53 Sicilian, Chekhover variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 d1d4 
 ¯ Chekhover, Zaitsev variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 d1d4 b8c6 f1b5 d8d7 
B54 Sicilian
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 
 ¯ Prins (Moscow) variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 f2f3 
 ¯ Prins variation, Venice attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 f2f3 e7e5 f1b5 
B56 Sicilian
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 
 ¯ Venice attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e5 f1b5 
B56 Sicilian
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 
 ¯ Sozin, not Scheveningen
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1c4 
 ¯ Magnus Smith trap
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1c4 g7g6 d4c6 b7c6 e4e5 
 ¯ Sozin, Benko variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 f1c4 d8b6 
 ¯ classical
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 
 ¯ Boleslavsky variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 e7e5 
 ¯ Boleslavsky, Louma variation
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 e7e5 d4c6 
 ¯ Boleslavsky variation, 7.Nb3
e2e4 c7c5 g1f3 b8c6 d2d4 c5d4 f3d4 g8f6 b1c3 d7d6 f1e2 e7e5 d4b3 
 ¯ Richter-Rauzer
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 
 ¯ Richter-Rauzer, Bondarevsky variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 g7g6 
 ¯ Richter-Rauzer, Larsen variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 c8d7 
 ¯ Richter-Rauzer, Larsen variation, 7.Qd2
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 c8d7 d1d2 
 ¯ Richter-Rauzer, 6...e6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 
 ¯ Richter-Rauzer, Podvebrady variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d4b3 
 ¯ Richter-Rauzer, Margate (Alekhine) variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 f1b5 
 ¯ Richter-Rauzer, Richter attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d4c6 
 ¯ Richter-Rauzer, Keres variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d3 
 ¯ Richter-Rauzer, Rauzer attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 
 ¯ Richter-Rauzer, Rauzer attack, 7...Be7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 
 ¯ Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 
 ¯ Richter-Rauzer, Rauzer attack, Geller variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 e6e5 
 ¯ Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 c6d4 
 ¯ Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 f8e7 e1c1 e8g8 f2f4 c6d4 d2d4 
 ¯ Richter-Rauzer, Rauzer attack, 7...a6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6 
 ¯ Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7 
 ¯ Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7 f2f4 f8e7 
 ¯ Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 b8c6 c1g5 e7e6 d1d2 a7a6 e1c1 c8d7 f2f4 f8e7 d4f3 b7b5 g5f6 
 ¯ dragon variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 
 ¯ dragon, Levenfish variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f2f4 
 ¯ dragon, Levenfish; Flohr variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 f2f4 b8d7 
 ¯ dragon, 6.Be3
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 
 ¯ dragon, classical attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 
 ¯ dragon, classical, Amsterdam variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 d1d2 
 ¯ dragon, classical, Grigoriev variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 d1d2 e8g8 e1c1 
 ¯ dragon, classical, Nottingham variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 d4b3 
 ¯ dragon, classical, 8.O-O
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 
 ¯ dragon, classical, Zollner gambit
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 f2f4 d8b6 e4e5 
 ¯ dragon, classical, Richter variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d1d2 
 ¯ dragon, classical, 9.Nb3
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 
 ¯ dragon, classical, Stockholm attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 c8e6 f2f4 c6a5 f4f5 e6c4 b3a5 c4e2 d1e2 d8a5 g2g4 
 ¯ dragon, classical, Spielmann variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 c8e6 f2f4 c6a5 f4f5 e6c4 e2d3 
 ¯ dragon, classical, Bernard defence
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 c8e6 f2f4 c6a5 f4f5 e6c4 e2d3 c4d3 c2d3 d6d5 
 ¯ dragon, classical, Reti-Tartakower variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 c8e6 f2f4 d8c8 
 ¯ dragon, classical, Alekhine variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f1e2 b8c6 e1g1 e8g8 d4b3 a7a5 
 ¯ dragon, Yugoslav attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 
 ¯ dragon, Yugoslav attack, 7...O-O
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 
 ¯ dragon, Yugoslav attack, Rauser variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 e1c1 
 ¯ dragon, Yugoslav attack, 9.Bc4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 
 ¯ dragon, Yugoslav attack, Byrne variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 a7a5 
 ¯ dragon, Yugoslav attack, 9...Bd7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 
 ¯ dragon, Yugoslav attack, 10.O-O-O
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 e1c1 
 ¯ dragon, Yugoslav attack, 12.h4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 g7g6 c1e3 f8g7 f2f3 e8g8 d1d2 b8c6 f1c4 c8d7 e1c1 d8a5 c4b3 f8c8 h2h4 
 ¯ Scheveningen variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 
 ¯ Scheveningen, English variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 c1e3 a7a6 d1d2 
 ¯ Scheveningen, Vitolins variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1b5 
 ¯ Scheveningen, fianchetto variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 g2g3 
 ¯ Scheveningen, Keres attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 g2g4 
 ¯ Scheveningen, 6.f4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f2f4 
 ¯ Scheveningen, Tal variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f2f4 b8c6 c1e3 f8e7 d1f3 
 ¯ Scheveningen, 6.Be2
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 
 ¯ modern Scheveningen
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 b8c6 
 ¯ modern Scheveningen, main line
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 b8c6 e1g1 f8e7 c1e3 e8g8 f2f4 
 ¯ modern Scheveningen, main line with Nb3
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 b8c6 e1g1 f8e7 c1e3 e8g8 f2f4 c8d7 d4b3 
 ¯ Scheveningen (Paulsen), classical variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 
 ¯ Scheveningen, classical, Nd7 system
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 b8d7 
 ¯ Scheveningen (Paulsen), classical variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 
 ¯ Scheveningen, classical variation with ...Qc7 and ...Nc6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 f2f4 b8c6 
 ¯ Scheveningen, classical, Maroczy system
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 f2f4 b8c6 g1h1 f8e7 a2a4 
 ¯ Scheveningen, classical
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 f2f4 b8c6 c1e3 
 ¯ Scheveningen, classical main line
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1e2 a7a6 e1g1 d8c7 f2f4 b8c6 c1e3 f8e7 d1e1 e8g8 
 ¯ Sozin attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 
 ¯ Sozin with ...a6 and ...b5
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 a7a6 c4b3 b7b5 
 ¯ Sozin, Leonhardt variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 b8c6 
 ¯ Sozin, Fischer variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 b8c6 c4b3 f8e7 c1e3 e8g8 f2f4 
 ¯ Sozin, 7.Be3
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 b8c6 c1e3 
 ¯ Velimirovic attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 e7e6 f1c4 b8c6 c1e3 f8e7 d1e2 
 ¯ Najdorf
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 
 ¯ Najdorf, Adams attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 h2h3 
 ¯ Najdorf, Lipnitzky attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1c4 
 ¯ Najdorf, Byrne (English) attack
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1e3 
 ¯ Najdorf, Zagreb (fianchetto) variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 g2g3 
 ¯ Najdorf, Opovcensky variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f1e2 
 ¯ Najdorf, 6.f4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 f2f4 
 ¯ Najdorf, 6.Bg5
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 
 ¯ Najdorf, Ivkov variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 b8d7 f1c4 d8a5 d1d2 e7e6 e1c1 b7b5 c4b3 c8b7 h1e1 d7c5 e4e5 
 ¯ Najdorf, 6...e6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 
 ¯ Najdorf, 7.f4
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 
 ¯ Najdorf, Polugayevsky variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 b7b5 
 ¯ Najdorf, Polugayevsky, Simagin variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 b7b5 e4e5 d6e5 f4e5 d8c7 d1e2 
 ¯ Najdorf, 7...Qb6
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 d8b6 
 ¯ Najdorf, Poisoned pawn variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 d8b6 d1d2 b6b2 a1b1 b2a3 
 ¯ Najdorf, 7...Be7
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 
 ¯ Najdorf, Browne variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 h7h6 g5h4 d8c7 
 ¯ Najdorf, Goteborg (Argentine) variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 h7h6 g5h4 g7g5 
 ¯ Najdorf variation
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 d8c7 
 ¯ Najdorf, 7...Be7 main line
e2e4 c7c5 g1f3 d7d6 d2d4 c5d4 f3d4 g8f6 b1c3 a7a6 c1g5 e7e6 f2f4 f8e7 d1f3 d8c7 e1c1 b8d7 
C00 French defence
e2e4 e7e6 
C00 French defence, Steiner variation
e2e4 e7e6 c2c4 
 ¯ Reti (Spielmann) variation
e2e4 e7e6 b2b3 
 ¯ Steinitz attack
e2e4 e7e6 e4e5 
 ¯ Labourdonnais variation
e2e4 e7e6 f2f4 
C00 French defence
e2e4 e7e6 g1f3 
 ¯ Wing gambit
e2e4 e7e6 g1f3 d7d5 e4e5 c7c5 b2b4 
C00 French defence
e2e4 e7e6 b1c3 
 ¯ Pelikan variation
e2e4 e7e6 b1c3 d7d5 f2f4 
 ¯ Two knights variation
e2e4 e7e6 b1c3 d7d5 g1f3 
 ¯ Chigorin variation
e2e4 e7e6 d1e2 
 ¯ King's Indian attack
e2e4 e7e6 d2d3 
 ¯ Reversed Philidor formation
e2e4 e7e6 d2d3 d7d5 b1d2 g8f6 g1f3 b8c6 f1e2 
C00 French defence
e2e4 e7e6 d2d4 
C00 Lengfellner system
e2e4 e7e6 d2d4 d7d6 
C00 St. George defence
e2e4 e7e6 d2d4 a7a6 
C00 French defence
e2e4 e7e6 d2d4 d7d5 
 ¯ Schlechter variation
e2e4 e7e6 d2d4 d7d5 f1d3 
 ¯ Alapin variation
e2e4 e7e6 d2d4 d7d5 c1e3 
 ¯ exchange variation
e2e4 e7e6 d2d4 d7d5 e4d5 
 ¯ exchange, Svenonius variation
e2e4 e7e6 d2d4 d7d5 e4d5 e6d5 b1c3 g8f6 c1g5 
 ¯ exchange, Bogolyubov variation
e2e4 e7e6 d2d4 d7d5 e4d5 e6d5 b1c3 g8f6 c1g5 b8c6 
 ¯ advance variation
e2e4 e7e6 d2d4 d7d5 e4e5 
 ¯ advance, Steinitz variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 d4c5 
 ¯ advance, Nimzovich variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 d1g4 
 ¯ advance, Nimzovich system
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 g1f3 
 ¯ advance variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 
 ¯ advance, Wade variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 d8b6 g1f3 c8d7 
 ¯ advance variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 
 ¯ advance, Paulsen attack
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 
 ¯ advance, Milner-Barry gambit
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 d8b6 f1d3 
 ¯ advance, Euwe variation
e2e4 e7e6 d2d4 d7d5 e4e5 c7c5 c2c3 b8c6 g1f3 c8d7 
 ¯ Tarrasch
e2e4 e7e6 d2d4 d7d5 b1d2 
 ¯ Tarrasch, Haberditz variation
e2e4 e7e6 d2d4 d7d5 b1d2 f7f5 
 ¯ Tarrasch, Guimard variation
e2e4 e7e6 d2d4 d7d5 b1d2 b8c6 
 ¯ Tarrasch, Guimard main line
e2e4 e7e6 d2d4 d7d5 b1d2 b8c6 g1f3 g8f6 
 ¯ Tarrasch, closed variation
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 
 ¯ Tarrasch, Botvinnik variation
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b7b6 
 ¯ Tarrasch, closed variation
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6 
 ¯ Tarrasch, closed variation, main line
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6 g1e2 c5d4 c3d4 
 ¯ Tarrasch, Leningrad variation
e2e4 e7e6 d2d4 d7d5 b1d2 g8f6 e4e5 f6d7 f1d3 c7c5 c2c3 b8c6 g1e2 c5d4 c3d4 d7b6 
 ¯ Tarrasch, open variation
e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 
 ¯ Tarrasch, Eliskases variation
e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 d8d5 g1f3 c5d4 f1c4 d5d8 
 ¯ Tarrasch, open, 4.ed ed
e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 e6d5 
 ¯ Tarrasch, open variation, main line
e2e4 e7e6 d2d4 d7d5 b1d2 c7c5 e4d5 e6d5 g1f3 b8c6 
 ¯ Paulsen variation
e2e4 e7e6 d2d4 d7d5 b1c3 
 ¯ Marshall variation
e2e4 e7e6 d2d4 d7d5 b1c3 c7c5 
 ¯ Rubinstein variation
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 
 ¯ Fort Knox variation
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 c8d7 g1f3 d7c6 
 ¯ Rubinstein variation
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7 
 ¯ Rubinstein, Capablanca line
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 b8d7 g1f3 g8f6 e4f6 d7f6 f3e5 
 ¯ Frere (Becker) variation
e2e4 e7e6 d2d4 d7d5 b1c3 d5e4 c3e4 d8d5 
C11 French defence
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 
 ¯ Swiss variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 f1d3 
 ¯ Henneberger variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1e3 
 ¯ Steinitz variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 
 ¯ Steinitz, Bradford attack
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 f8c5 d1g4 
 ¯ Steinitz variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 b8c6 
 ¯ Steinitz, Brodsky-Jones variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 d4c5 b8c6 a2a3 f8c5 d1g4 e8g8 g1f3 f7f6 
 ¯ Steinitz variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 
 ¯ Steinitz, Boleslavsky variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 f2f4 c7c5 g1f3 b8c6 c1e3 
 ¯ Steinitz, Gledhill attack
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 e4e5 f6d7 d1g4 
 ¯ Burn variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 d5e4 
 ¯ MacCutcheon variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 
 ¯ MacCutcheon, Bogolyubov variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4d5 d8d5 g5f6 g7f6 d1d2 d5a5 
 ¯ MacCutcheon, advance variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 
 ¯ MacCutcheon, Chigorin variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 e5f6 
 ¯ MacCutcheon, Grigoriev variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 e5f6 h6g5 f6g7 h8g8 h2h4 g5h4 d1g4 
 ¯ MacCutcheon, Bernstein variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5h4 
 ¯ MacCutcheon, Janowski variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5e3 
 ¯ MacCutcheon, Dr. Olland (Dutch) variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5c1 
 ¯ MacCutcheon, Tartakower variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 f6d7 
 ¯ MacCutcheon, Lasker variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3 
 ¯ MacCutcheon, Duras variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3 b2c3 f6e4 d1g4 e8f8 d2c1 
 ¯ MacCutcheon, Lasker variation, 8...g6
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8b4 e4e5 h7h6 g5d2 b4c3 b2c3 f6e4 d1g4 g7g6 
 ¯ classical
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 
 ¯ classical, Anderssen variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 g5f6 
 ¯ classical, Anderssen-Richter variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 g5f6 e7f6 e4e5 f6e7 d1g4 
 ¯ classical, Vistaneckis (Nimzovich) variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6g8 
 ¯ classical, Frankfurt variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6g8 g5e3 b7b6 
 ¯ classical, Tartakower variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6e4 
 ¯ Albin-Alekhine-Chatard attack
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 
 ¯ Albin-Alekhine-Chatard attack, Maroczy variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 a7a6 
 ¯ Albin-Alekhine-Chatard attack, Breyer variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 c7c5 
 ¯ Albin-Alekhine-Chatard attack, Teichmann variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 f7f6 
 ¯ Albin-Alekhine-Chatard attack, Spielmann variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 h2h4 e8g8 
 ¯ classical variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 
 ¯ classical, Tarrasch variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f1d3 
 ¯ classical, Rubinstein variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 d1d2 
 ¯ classical, Alapin variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 c3b5 
 ¯ classical, Pollock variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 d1g4 
 ¯ classical, Steinitz variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f2f4 
 ¯ classical, Stahlberg variation
e2e4 e7e6 d2d4 d7d5 b1c3 g8f6 c1g5 f8e7 e4e5 f6d7 g5e7 d8e7 f2f4 e8g8 g1f3 c7c5 d1d2 b8c6 e1c1 c5c4 
 ¯ Winawer (Nimzovich) variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 
 ¯ Winawer, Kondratiyev variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 f1d3 c7c5 e4d5 d8d5 c1d2 
 ¯ Winawer, fingerslip variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 c1d2 
 ¯ Winawer, Alekhine (Maroczy) gambit
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 
 ¯ Winawer, Alekhine gambit, Alatortsev variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4e7 c3e4 g8f6 e2g3 e8g8 f1e2 b8c6 
 ¯ Winawer, Alekhine gambit
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4c3 
 ¯ Winawer, Alekhine gambit, Kan variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 g1e2 d5e4 a2a3 b4c3 e2c3 b8c6 
 ¯ Winawer, advance variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 
 ¯ Winawer, Petrosian variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 d8d7 
 ¯ Winawer, advance variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 
 ¯ Winawer, advance, Bogolyubov variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 c1d2 
 ¯ Winawer, advance, Russian variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 d1g4 
 ¯ Winawer, advance, 5.a3
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 
 ¯ Winawer, advance, Rauzer variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 c5d4 a3b4 d4c3 g1f3 
 ¯ Winawer, advance variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 
 ¯ Winawer, classical variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 d8c7 
 ¯ Winawer, advance, 6...Ne7
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 
 ¯ Winawer, advance, Smyslov variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 a3a4 
 ¯ Winawer, advance, positional main line
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 g1f3 
 ¯ Winawer, advance, poisoned pawn variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4 
 ¯ Winawer, advance, poisoned pawn, Euwe-Gligoric variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4 d8c7 g4g7 h8g8 g7h7 c5d4 e1d1 
 ¯ Winawer, advance, poisoned pawn, Konstantinopolsky variation
e2e4 e7e6 d2d4 d7d5 b1c3 f8b4 e4e5 c7c5 a2a3 b4c3 b2c3 g8e7 d1g4 d8c7 g4g7 h8g8 g7h7 c5d4 g1e2 
C20 King's pawn game
e2e4 e7e5 
 ¯ Indian opening
e2e4 e7e5 d2d3 
 ¯ Mengarini's opening
e2e4 e7e5 a2a3 
 ¯ King's head opening
e2e4 e7e5 f2f3 
 ¯ Patzer opening
e2e4 e7e5 d1h5 
 ¯ Napoleon's opening
e2e4 e7e5 d1f3 
 ¯ Lopez opening
e2e4 e7e5 c2c3 
C20 Alapin's opening
e2e4 e7e5 g1e2 
C21 Centre game
e2e4 e7e5 d2d4 e5d4 
C21 Centre game, Kieseritsky variation
e2e4 e7e5 d2d4 e5d4 g1f3 c7c5 f1c4 b7b5 
C21 Halasz gambit
e2e4 e7e5 d2d4 e5d4 f2f4 
C21 Danish gambit
e2e4 e7e5 d2d4 e5d4 c2c3 
 ¯ Collijn defence
e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2 d8e7 
 ¯ Schlechter defence
e2e4 e7e5 d2d4 e5d4 c2c3 d4c3 f1c4 c3b2 c1b2 d7d5 
 ¯ Soerensen defence
e2e4 e7e5 d2d4 e5d4 c2c3 d7d5 
C21 Centre game
e2e4 e7e5 d2d4 e5d4 d1d4 
C22 Centre game
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 
 ¯ Paulsen attack
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 
 ¯ Charousek variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 f8b4 c2c3 b4e7 
 ¯ l'Hermet variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 f7f5 
 ¯ Berger variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 g8f6 
 ¯ Kupreichik variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4e3 g8f6 b1c3 f8b4 c1d2 e8g8 e1c1 f8e8 f1c4 d7d6 g1h3 
 ¯ Hall variation
e2e4 e7e5 d2d4 e5d4 d1d4 b8c6 d4c4 
C23 Bishop's opening
e2e4 e7e5 f1c4 
 ¯ Philidor counter-attack
e2e4 e7e5 f1c4 c7c6 
 ¯ Lisitsyn variation
e2e4 e7e5 f1c4 c7c6 d2d4 d7d5 e4d5 c6d5 c4b5 c8d7 b5d7 b8d7 d4e5 d7e5 g1e2 
 ¯ Calabrese counter-gambit
e2e4 e7e5 f1c4 f7f5 
 ¯ Calabrese counter-gambit, Jaenisch variation
e2e4 e7e5 f1c4 f7f5 d2d3 
 ¯ Classical variation
e2e4 e7e5 f1c4 f8c5 
 ¯ Lopez gambit
e2e4 e7e5 f1c4 f8c5 d1e2 b8c6 c2c3 g8f6 f2f4 
 ¯ Philidor variation
e2e4 e7e5 f1c4 f8c5 c2c3 
 ¯ Pratt variation
e2e4 e7e5 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 d7d5 e5f6 d5c4 d1h5 e8g8 
 ¯ Lewis counter-gambit
e2e4 e7e5 f1c4 f8c5 c2c3 d7d5 
 ¯ del Rio variation
e2e4 e7e5 f1c4 f8c5 c2c3 d8g5 
 ¯ Lewis gambit
e2e4 e7e5 f1c4 f8c5 d2d4 
 ¯ Wing gambit
e2e4 e7e5 f1c4 f8c5 b2b4 
 ¯ MacDonnell double gambit
e2e4 e7e5 f1c4 f8c5 b2b4 c5b4 f2f4 
 ¯ Four pawns' gambit
e2e4 e7e5 f1c4 f8c5 b2b4 c5b4 f2f4 e5f4 g1f3 b4e7 d2d4 e7h4 g2g3 f4g3 e1g1 g3h2 g1h1 
 ¯ Berlin defence
e2e4 e7e5 f1c4 g8f6 
 ¯ Greco gambit
e2e4 e7e5 f1c4 g8f6 f2f4 
 ¯ Ponziani gambit
e2e4 e7e5 f1c4 g8f6 d2d4 
 ¯ Urusov gambit
e2e4 e7e5 f1c4 g8f6 d2d4 e5d4 g1f3 
 ¯ Urusov gambit, Panov variation
e2e4 e7e5 f1c4 g8f6 d2d4 e5d4 g1f3 d7d5 e4d5 f8b4 c2c3 d8e7 
C25 Vienna game
e2e4 e7e5 b1c3 
 ¯ Zhuravlev countergambit
e2e4 e7e5 b1c3 f8b4 d1g4 g8f6 
C25 Vienna game, Max Lange defence
e2e4 e7e5 b1c3 b8c6 
 ¯ Paulsen variation
e2e4 e7e5 b1c3 b8c6 g2g3 
 ¯ Fyfe gambit
e2e4 e7e5 b1c3 b8c6 d2d4 
C25 Vienna gambit
e2e4 e7e5 b1c3 b8c6 f2f4 
 ¯ Steinitz gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 
 ¯ Steinitz gambit, Zukertort defence
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2 d7d5 
 ¯ Steinitz gambit, Fraser-Minckwitz variation
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 d2d4 d8h4 e1e2 b7b6 
C25 Vienna gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 
 ¯ Hamppe-Allgaier gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 
 ¯ Hamppe-Allgaier gambit, Alapin variation
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 d7d6 
 ¯ Hamppe-Muzio gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 
 ¯ Hamppe-Muzio, Dubois variation
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 c6e5 f3f4 d8f6 
 ¯ Pierce gambit
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 d2d4 
 ¯ Pierce gambit, Rushmere attack
e2e4 e7e5 b1c3 b8c6 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 f1c4 g4f3 e1g1 d7d5 e4d5 c8g4 d5c6 
 ¯ Falkbeer variation
e2e4 e7e5 b1c3 g8f6 
 ¯ Mengarini variation
e2e4 e7e5 b1c3 g8f6 a2a3 
 ¯ Paulsen-Mieses variation
e2e4 e7e5 b1c3 g8f6 g2g3 
C26 Vienna game
e2e4 e7e5 b1c3 g8f6 f1c4 
C27 Vienna game
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 
 ¯ `Frankenstein-Dracula' variation
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 b8c6 c3b5 g7g6 h5f3 f7f5 f3d5 d8e7 b5c7 e8d8 c7a8 b7b6 
 ¯ Adams' gambit
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 b8c6 d2d4 
C27 Vienna game
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 f8e7 
 ¯ Alekhine variation
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 d1h5 e4d6 c4b3 f8e7 g1f3 b8c6 f3e5 
C27 Boden-Kieseritsky gambit
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 g1f3 
 ¯ Lichtenhein defence
e2e4 e7e5 b1c3 g8f6 f1c4 f6e4 g1f3 d7d5 
C28 Vienna game
e2e4 e7e5 b1c3 g8f6 f1c4 b8c6 
C29 Vienna gambit
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 
 ¯ Kaufmann variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 g1f3 c8g4 d1e2 
 ¯ Breyer variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 g1f3 f8e7 
 ¯ Paulsen attack
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3 
 ¯ Bardeleben variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3 f7f5 
 ¯ Heyde variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d1f3 f7f5 d2d4 
C29 Vienna gambit
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d2d3 
C29 Vienna gambit, Wurzburger trap
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 f4e5 f6e4 d2d3 d8h4 g2g3 e4g3 g1f3 h4h5 c3d5 
C29 Vienna gambit, Steinitz variation
e2e4 e7e5 b1c3 g8f6 f2f4 d7d5 d2d3 
C30 King's gambit
e2e4 e7e5 f2f4 
 ¯ Keene's defence
e2e4 e7e5 f2f4 d8h4 g2g3 h4e7 
 ¯ Mafia defence
e2e4 e7e5 f2f4 c7c5 
 ¯ Norwalde variation
e2e4 e7e5 f2f4 d8f6 
 ¯ Norwalde variation, Buecker gambit
e2e4 e7e5 f2f4 d8f6 g1f3 f6f4 b1c3 f8b4 f1c4 
 ¯ classical variation
e2e4 e7e5 f2f4 f8c5 
 ¯ classical, Svenonius variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 b1c3 g8f6 f1c4 b8c6 d2d3 c8g4 h2h3 g4f3 d1f3 e5f4 
 ¯ classical, Hanham variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 b1c3 b8d7 
 ¯ classical, 4.c3
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 
 ¯ classical, Marshall attack
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 c8g4 f4e5 d6e5 d1a4 
 ¯ classical counter-gambit
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 f7f5 
 ¯ classical, Reti variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 c2c3 f7f5 f4e5 d6e5 d2d4 e5d4 f1c4 
 ¯ classical, Soldatenkov variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 f4e5 
 ¯ classical, Heath variation
e2e4 e7e5 f2f4 f8c5 g1f3 d7d6 b2b4 
 ¯ 2...Nf6
e2e4 e7e5 f2f4 g8f6 
 ¯ Falkbeer counter-gambit
e2e4 e7e5 f2f4 d7d5 
 ¯ Falkbeer, Tartakower variation
e2e4 e7e5 f2f4 d7d5 g1f3 
 ¯ Falkbeer, Milner-Barry variation
e2e4 e7e5 f2f4 d7d5 b1c3 
 ¯ Falkbeer counter-gambit
e2e4 e7e5 f2f4 d7d5 e4d5 
 ¯ Nimzovich counter-gambit
e2e4 e7e5 f2f4 d7d5 e4d5 c7c6 
 ¯ Falkbeer, 3...e4
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 
 ¯ Falkbeer, Rubinstein variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 b1c3 g8f6 d1e2 
 ¯ Falkbeer, Nimzovich variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 f1b5 
 ¯ Falkbeer, 4.d3
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 
 ¯ Falkbeer, Morphy gambit
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 b1c3 f8b4 c1d2 e4e3 
 ¯ Falkbeer, 5.de
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 
 ¯ Falkbeer, Alapin variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c5f2 e1d1 d8d5 f3d2 
 ¯ Falkbeer, main line, 7...Bf5
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c8f5 
 ¯ Falkbeer, Tarrasch variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 g1f3 f8c5 d1e2 c8f5 g2g4 e8g8 
 ¯ Falkbeer, Charousek gambit
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 d1e2 
 ¯ Falkbeer, Charousek variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d3e4 f6e4 d1e2 d8d5 b1d2 f7f5 g2g4 
 ¯ Falkbeer, Keres variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 b1d2 
 ¯ Falkbeer, Reti variation
e2e4 e7e5 f2f4 d7d5 e4d5 e5e4 d2d3 g8f6 d1e2 
C33 King's gambit accepted
e2e4 e7e5 f2f4 e5f4 
 ¯ Tumbleweed gambit
e2e4 e7e5 f2f4 e5f4 e1f2 
 ¯ Orsini gambit
e2e4 e7e5 f2f4 e5f4 b2b3 
 ¯ Pawn's gambit (Stamma gambit)
e2e4 e7e5 f2f4 e5f4 h2h4 
 ¯ Schurig gambit
e2e4 e7e5 f2f4 e5f4 f1d3 
 ¯ Carrera (Basman) gambit
e2e4 e7e5 f2f4 e5f4 d1e2 
 ¯ Villemson (Steinitz) gambit
e2e4 e7e5 f2f4 e5f4 d2d4 
 ¯ Keres (Mason-Steinitz) gambit
e2e4 e7e5 f2f4 e5f4 b1c3 
 ¯ Breyer gambit
e2e4 e7e5 f2f4 e5f4 d1f3 
 ¯ Lesser bishop's (Petroff-Jaenisch-Tartakower) gambit
e2e4 e7e5 f2f4 e5f4 f1e2 
 ¯ bishop's gambit
e2e4 e7e5 f2f4 e5f4 f1c4 
 ¯ bishop's gambit, Chigorin's attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 d7d5 c4d5 g7g5 g2g3 
 ¯ bishop's gambit, Greco variation
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 f8c5 
 ¯ bishop's gambit, classical defence
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 
 ¯ bishop's gambit, Grimm attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 d2d4 d7d6 e4e5 
 ¯ bishop's gambit, classical defence
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 d2d4 g8e7 
 ¯ bishop's gambit, McDonnell attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 d2d4 g8e7 g2g3 
 ¯ bishop's gambit, McDonnell attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 g2g3 
 ¯ bishop's gambit, Fraser variation
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 b1c3 f8g7 g2g3 f4g3 d1f3 
 ¯ bishop's gambit, classical defence, Cozio attack
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 g7g5 d1f3 
 ¯ bishop's gambit, Boden defence
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 b8c6 
 ¯ bishop's gambit, Bryan counter-gambit
e2e4 e7e5 f2f4 e5f4 f1c4 d8h4 e1f1 b7b5 
 ¯ bishop's gambit, Bryan counter-gambit
e2e4 e7e5 f2f4 e5f4 f1c4 b7b5 
 ¯ bishop's gambit, Steinitz defence
e2e4 e7e5 f2f4 e5f4 f1c4 g8e7 
 ¯ bishop's gambit, Maurian defence
e2e4 e7e5 f2f4 e5f4 f1c4 b8c6 
 ¯ bishop's gambit, Ruy Lopez defence
e2e4 e7e5 f2f4 e5f4 f1c4 c7c6 
 ¯ bishop's gambit, Lopez-Gianutio counter-gambit
e2e4 e7e5 f2f4 e5f4 f1c4 f7f5 
 ¯ Lopez-Gianutio counter-gambit, Hein variation
e2e4 e7e5 f2f4 e5f4 f1c4 f7f5 d1e2 d8h4 e1d1 f5e4 b1c3 e8d8 
 ¯ bishop's gambit, Bledow variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 
 ¯ bishop's gambit, Gifford variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 d8h4 e1f1 g7g5 g2g3 
 ¯ bishop's gambit, Boren-Svenonius variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 d8h4 e1f1 f8d6 
 ¯ bishop's gambit, Anderssen variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 c7c6 
 ¯ bishop's gambit, Morphy variation
e2e4 e7e5 f2f4 e5f4 f1c4 d7d5 c4d5 g8f6 
 ¯ bishop's gambit, Cozio (Morphy) defence
e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 
 ¯ bishop's gambit, Bogolyubov variation
e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3 
 ¯ bishop's gambit, Paulsen attack
e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3 f8b4 e4e5 
 ¯ bishop's gambit, Jaenisch variation
e2e4 e7e5 f2f4 e5f4 f1c4 g8f6 b1c3 c7c6 
C34 King's knight's gambit
e2e4 e7e5 f2f4 e5f4 g1f3 
 ¯ Bonsch-Osmolovsky variation
e2e4 e7e5 f2f4 e5f4 g1f3 g8e7 
 ¯ Gianutio counter-gambit
e2e4 e7e5 f2f4 e5f4 g1f3 f7f5 
 ¯ Fischer defence
e2e4 e7e5 f2f4 e5f4 g1f3 d7d6 
 ¯ Becker defence
e2e4 e7e5 f2f4 e5f4 g1f3 h7h6 
 ¯ Schallop defence
e2e4 e7e5 f2f4 e5f4 g1f3 g8f6 
 ¯ Cunningham defence
e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 
 ¯ Cunningham, Bertin gambit
e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 e7h4 g2g3 
 ¯ Cunningham, three pawns gambit
e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 e7h4 g2g3 f4g3 e1g1 g3h2 g1h1 
 ¯ Cunningham, Euwe defence
e2e4 e7e5 f2f4 e5f4 g1f3 f8e7 f1c4 g8f6 
 ¯ Abbazia defence (classical defence, modern defence[!])
e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 
 ¯ Abbazia defence, modern variation
e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 e4d5 g8f6 
 ¯ Abbazia defence, Botvinnik variation
e2e4 e7e5 f2f4 e5f4 g1f3 d7d5 e4d5 g8f6 f1b5 c7c6 d5c6 b7c6 b5c4 f6d5 
 ¯ Quaade gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 b1c3 
 ¯ Rosentreter gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4 
 ¯ Soerensen gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 d2d4 g5g4 f3e5 
 ¯ King's knight's gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 
 ¯ Blachly gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 b8c6 
 ¯ Lolli gambit (wild Muzio gambit)
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 c4f7 
 ¯ Lolli gambit, Young variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 c4f7 e8f7 e1g1 g4f3 d1f3 d8f6 d2d4 f6d4 c1e3 d4f6 b1c3 
 ¯ Ghulam Kassim gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 d2d4 
 ¯ MacDonnell gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 b1c3 
 ¯ Salvio gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 
 ¯ Silberschmidt gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 g8h6 d2d4 f4f3 
 ¯ Salvio gambit, Anderssen counter-attack
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 g8h6 d2d4 d7d6 
 ¯ Cochrane gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 f4f3 
 ¯ Herzfeld gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 f3e5 d8h4 e1f1 b8c6 
 ¯ Muzio gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 
 ¯ Muzio gambit, Paulsen variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 e4e5 f6e5 d2d3 f8h6 b1c3 g8e7 c1d2 b8c6 a1e1 
 ¯ double Muzio gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8f6 e4e5 f6e5 c4f7 
 ¯ Muzio gambit, From defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 d8e7 
 ¯ Muzio gambit, Holloway defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 g4f3 d1f3 b8c6 
 ¯ Muzio gambit, Kling and Horwitz counter-attack
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 d8e7 
 ¯ Muzio gambit, Brentano defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 g5g4 e1g1 d7d5 
C38 King's knight's gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 
 ¯ Hanstein gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 e1g1 
 ¯ Philidor gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 h2h4 
 ¯ Greco gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 h2h4 h7h6 d2d4 d7d6 b1c3 c7c6 h4g5 h6g5 h1h8 g7h8 f3e5 
 ¯ Philidor gambit, Schultz variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 f1c4 f8g7 h2h4 h7h6 d2d4 d7d6 d1d3 
C39 King's knight's gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 
 ¯ Allgaier gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 
 ¯ Allgaier, Horny defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d1g4 g8f6 g4f4 f8d6 
 ¯ Allgaier, Thorold variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d2d4 
 ¯ Allgaier, Cook variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 d2d4 d7d5 c1f4 d5e4 f1c4 f7g7 f4e5 
 ¯ Allgaier, Blackburne gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 b1c3 
 ¯ Allgaier, Walker attack
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 f1c4 
 ¯ Allgaier, Urusov attack
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 h7h6 g5f7 e8f7 f1c4 d7d5 c4d5 f7g7 d2d4 
 ¯ Allgaier, Schlechter defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3g5 g8f6 
 ¯ Kieseritsky, Paulsen defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 f8g7 
 ¯ Kieseritsky, long whip (Stockwhip, classical) defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 h7h5 
 ¯ Kieseritsky, long whip defence, Jaenisch variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 h7h5 f1c4 h8h7 d2d4 f8h6 b1c3 
 ¯ Kieseritsky, Brentano (Campbell) defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 
 ¯ Kieseritsky, Brentano defence, Kaplanek variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 d2d4 g8f6 e4d5 d8d5 b1c3 f8b4 e1f2 
 ¯ Kieseritsky, Brentano defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 d2d4 g8f6 c1f4 
 ¯ Kieseritsky, Brentano defence, Caro variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d5 d2d4 g8f6 c1f4 f6e4 b1d2 
 ¯ Kieseritsky, Salvio (Rosenthal) defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d8e7 
 ¯ Kieseritsky, Salvio defence, Cozio variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d8e7 d2d4 f7f5 f1c4 
 ¯ Kieseritsky, Polerio defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 f8e7 
 ¯ Kieseritsky, Neumann defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 b8c6 
 ¯ Kieseritsky, Kolisch defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 d7d6 
 ¯ Kieseritsky, Berlin defence
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 
 ¯ Kieseritsky, Berlin defence, Riviere variation
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 e5g4 d7d5 
 ¯ Kieseritsky, Berlin defence, 6.Bc4
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 
 ¯ Kieseritsky, Rice gambit
e2e4 e7e5 f2f4 e5f4 g1f3 g7g5 h2h4 g5g4 f3e5 g8f6 f1c4 d7d5 e4d5 f8d6 e1g1 
C40 King's knight opening
e2e4 e7e5 g1f3 
C40 Gunderam defence
e2e4 e7e5 g1f3 d8e7 
C40 Greco defence
e2e4 e7e5 g1f3 d8f6 
C40 Damiano's defence
e2e4 e7e5 g1f3 f7f6 
C40 QP counter-gambit (elephant gambit)
e2e4 e7e5 g1f3 d7d5 
 ¯ Maroczy gambit
e2e4 e7e5 g1f3 d7d5 e4d5 f8d6 
C40 Latvian counter-gambit
e2e4 e7e5 g1f3 f7f5 
 ¯ Nimzovich variation
e2e4 e7e5 g1f3 f7f5 f3e5 d8f6 d2d4 d7d6 e5c4 f5e4 c4e3 
 ¯ Fraser defence
e2e4 e7e5 g1f3 f7f5 f3e5 b8c6 
C40 Latvian gambit, 3.Bc4
e2e4 e7e5 g1f3 f7f5 f1c4 
 ¯ Behting variation
e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 d8g5 e5f7 g5g2 h1f1 d7d5 f7h8 g8f6 
 ¯ Polerio variation
e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 d7d5 
 ¯ corkscrew counter-gambit
e2e4 e7e5 g1f3 f7f5 f1c4 f5e4 f3e5 g8f6 
C41 Philidor's defence
e2e4 e7e5 g1f3 d7d6 
 ¯ Steinitz variation
e2e4 e7e5 g1f3 d7d6 f1c4 f8e7 c2c3 
 ¯ Lopez counter-gambit
e2e4 e7e5 g1f3 d7d6 f1c4 f7f5 
 ¯ Lopez counter-gambit, Jaenisch variation
e2e4 e7e5 g1f3 d7d6 f1c4 f7f5 d2d4 e5d4 f3g5 g8h6 g5h7 
C41 Philidor's defence
e2e4 e7e5 g1f3 d7d6 d2d4 
 ¯ Philidor counter-gambit
e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 
 ¯ Philidor counter-gambit, del Rio attack
e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 d4e5 f5e4 f3g5 d6d5 e5e6 
 ¯ Philidor counter-gambit, Berger variation
e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 d4e5 f5e4 f3g5 d6d5 e5e6 f8c5 b1c3 
 ¯ Philidor counter-gambit, Zukertort variation
e2e4 e7e5 g1f3 d7d6 d2d4 f7f5 b1c3 
 ¯ exchange variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 
 ¯ Boden variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 d1d4 c8d7 
 ¯ exchange variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 
 ¯ Paulsen attack
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 d6d5 e4d5 
 ¯ exchange variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6 
 ¯ Berger variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g8f6 b1c3 f8e7 f1e2 e8g8 e1g1 c7c5 d4f3 b8c6 c1g5 c8e6 f1e1 
 ¯ Larsen variation
e2e4 e7e5 g1f3 d7d6 d2d4 e5d4 f3d4 g7g6 
 ¯ Nimzovich (Jaenisch) variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 
 ¯ Improved Hanham variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 
 ¯ Nimzovich, Sozin variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1c4 f8e7 e1g1 e8g8 d1e2 c7c6 a2a4 e5d4 
 ¯ Nimzovich, Larobok variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 b1c3 b8d7 f1c4 f8e7 f3g5 e8g8 c4f7 
 ¯ Nimzovich variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5 
 ¯ Nimzovich, Sokolsky variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5 f6e4 b1d2 
 ¯ Nimzovich, Rellstab variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 d4e5 f6e4 d1d5 
 ¯ Nimzovich, Locock variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 f3g5 
 ¯ Nimzovich, Klein variation
e2e4 e7e5 g1f3 d7d6 d2d4 g8f6 f1c4 
 ¯ Hanham variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 
 ¯ Hanham, Krause variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 e1g1 
 ¯ Hanham, Steiner variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 e1g1 f8e7 d4e5 
 ¯ Hanham, Kmoch variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 f3g5 
 ¯ Hanham, Berger variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 f3g5 g8h6 f2f4 f8e7 e1g1 e8g8 c2c3 d6d5 
 ¯ Hanham, Schlechter variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 b1c3 
 ¯ Hanham, Delmar variation
e2e4 e7e5 g1f3 d7d6 d2d4 b8d7 f1c4 c7c6 c2c3 
C42 Petrov's defence
e2e4 e7e5 g1f3 g8f6 
 ¯ French attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d3 
 ¯ Kaufmann attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 c2c4 
 ¯ Nimzovich attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 b1c3 
 ¯ Cozio (Lasker) attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d1e2 
 ¯ classical attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 
 ¯ classical attack, Chigorin variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 
 ¯ classical attack, Berger variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 c8g4 c2c3 f7f5 b1d2 
 ¯ classical attack, Krause variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 c8g4 c2c3 f7f5 c3c4 
 ¯ classical attack, Maroczy variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 f1e1 c8g4 c2c3 f7f5 c3c4 e7h4 
 ¯ classical attack, Jaenisch variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 b8c6 c2c4 
 ¯ classical attack, Mason variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8e7 e1g1 e8g8 
 ¯ classical attack, Marshall variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 
 ¯ classical attack, Tarrasch variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 e1g1 e8g8 c2c4 c8g4 
 ¯ classical attack, Marshall trap
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 d6d5 f1d3 f8d6 e1g1 e8g8 c2c4 c8g4 c4d5 f7f5 f1e1 d6h2 
 ¯ classical attack, close variation
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f3 f6e4 d2d4 e4f6 
 ¯ Cochrane gambit
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5f7 
 ¯ Paulsen attack
e2e4 e7e5 g1f3 g8f6 f3e5 d7d6 e5c4 
 ¯ Damiano variation
e2e4 e7e5 g1f3 g8f6 f3e5 f6e4 
C42 Petrov three knights game
e2e4 e7e5 g1f3 g8f6 b1c3 
 ¯ Italian variation
e2e4 e7e5 g1f3 g8f6 f1c4 
 ¯ modern (Steinitz) attack
e2e4 e7e5 g1f3 g8f6 d2d4 
 ¯ modern attack, main line
e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1d4 
 ¯ modern attack, Steinitz variation
e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1e2 
 ¯ modern attack, Bardeleben variation
e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 e4e5 f6e4 d1e2 e4c5 f3d4 b8c6 
 ¯ Urusov gambit
e2e4 e7e5 g1f3 g8f6 d2d4 e5d4 f1c4 
 ¯ modern attack, Symmetrical variation
e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 
 ¯ modern attack, Trifunovic variation
e2e4 e7e5 g1f3 g8f6 d2d4 f6e4 f1d3 d7d5 f3e5 f8d6 e1g1 e8g8 c2c4 d6e5 
C44 King's pawn game
e2e4 e7e5 g1f3 b8c6 
C44 Irish (Chicago) gambit
e2e4 e7e5 g1f3 b8c6 f3e5 c6e5 d2d4 
C44 Konstantinopolsky opening
e2e4 e7e5 g1f3 b8c6 g2g3 
C44 Dresden opening
e2e4 e7e5 g1f3 b8c6 c2c4 
C44 Inverted Hungarian
e2e4 e7e5 g1f3 b8c6 f1e2 
C44 Inverted Hanham
e2e4 e7e5 g1f3 b8c6 f1e2 g8f6 d2d3 d7d5 b1d2 
C44 Tayler opening
e2e4 e7e5 g1f3 b8c6 f1e2 g8f6 d2d4 
C44 Ponziani opening
e2e4 e7e5 g1f3 b8c6 c2c3 
 ¯ Caro variation
e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 c8d7 
 ¯ Leonhardt variation
e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 g8f6 
 ¯ Steinitz variation
e2e4 e7e5 g1f3 b8c6 c2c3 d7d5 d1a4 f7f6 
 ¯ Jaenisch counter-attack
e2e4 e7e5 g1f3 b8c6 c2c3 g8f6 
 ¯ Fraser defence
e2e4 e7e5 g1f3 b8c6 c2c3 g8f6 d2d4 f6e4 d4d5 f8c5 
 ¯ Reti variation
e2e4 e7e5 g1f3 b8c6 c2c3 g8e7 
 ¯ Romanishin variation
e2e4 e7e5 g1f3 b8c6 c2c3 f8e7 
C44 Ponziani counter-gambit
e2e4 e7e5 g1f3 b8c6 c2c3 f7f5 
C44 Ponziani counter-gambit, Schmidt attack
e2e4 e7e5 g1f3 b8c6 c2c3 f7f5 d2d4 d7d6 d4d5 
C44 Ponziani counter-gambit, Cordel variation
e2e4 e7e5 g1f3 b8c6 c2c3 f7f5 d2d4 d7d6 d4d5 f5e4 f3g5 c6b8 g5e4 g8f6 f1d3 f8e7 
C44 Scotch opening
e2e4 e7e5 g1f3 b8c6 d2d4 
 ¯ Lolli variation
e2e4 e7e5 g1f3 b8c6 d2d4 c6d4 
 ¯ Cochrane variation
e2e4 e7e5 g1f3 b8c6 d2d4 c6d4 f3e5 d4e6 f1c4 c7c6 e1g1 g8f6 e5f7 
 ¯ Relfsson gambit ('MacLopez')
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1b5 
 ¯ Goering gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 
 ¯ Sea-cadet mate
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 b1c3 d7d6 f1c4 c8g4 e1g1 c6e5 f3e5 g4d1 c4f7 e8e7 c3d5 !
 ¯ Goering gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 b1c3 f8b4 
 ¯ Goering gambit, Bardeleben variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 c2c3 d4c3 b1c3 f8b4 f1c4 g8f6 
C44 Scotch gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 
 ¯ Anderssen (Paulsen, Suhle) counter-attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 e1g1 d7d6 c2c3 c8g4 
C44 Scotch gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5 
 ¯ Cochrane-Shumov defence
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5 g8h6 g5f7 h6f7 c4f7 e8f7 d1h5 g7g6 h5c5 d7d5 
 ¯ Vitzhum attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8c5 f3g5 g8h6 d1h5 
C44 Scotch gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 
 ¯ Hanneken variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 c2c3 d4c3 e1g1 c3b2 c1b2 g8f6 f3g5 e8g8 e4e5 c6e5 
C44 Scotch gambit
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 c2c3 d4c3 b2c3 
 ¯ Cochrane variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8b4 c2c3 d4c3 b2c3 b4a5 e4e5 
 ¯ Benima defence
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 f8e7 
 ¯ Dubois-Reti defence
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f1c4 g8f6 
C45 Scotch game
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 
 ¯ Ghulam Kassim variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 c6d4 d1d4 d7d6 f1d3 
 ¯ Pulling counter-attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 
 ¯ Horwitz attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 
 ¯ Berger variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 b1d2 h4e4 f1e2 e4g2 e2f3 g2h3 b5c7 e8d8 c7a8 g8f6 a2a3 
C45 Scotch game
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 c1d2 
 ¯ Rosenthal variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4b5 f8b4 c1d2 h4e4 f1e2 e8d8 e1g1 b4d2 b1d2 e4g6 
 ¯ Fraser attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 d4f3 
 ¯ Steinitz variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 d8h4 b1c3 
 ¯ Schmidt variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 
 ¯ Mieses variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 d4c6 b7c6 e4e5 
 ¯ Tartakower variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 g8f6 d4c6 b7c6 b1d2 
C45 Scotch game
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 
 ¯ Blackburne attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d1d2 
 ¯ Gottschall variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d1d2 d7d5 d4b5 c5e3 d2e3 e8g8 b5c7 a8b8 c7d5 e7d5 e4d5 c6b4 
 ¯ Paulsen attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 f1b5 
 ¯ Paulsen, Gunsberg defence
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 f1b5 c6d8 
 ¯ Meitner variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 c2c3 g8e7 d4c2 
 ¯ Blumenfeld attack
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 c1e3 d8f6 d4b5 
 ¯ Potter variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 d4b3 
 ¯ Romanishin variation
e2e4 e7e5 g1f3 b8c6 d2d4 e5d4 f3d4 f8c5 d4b3 c5b4 
C46 Three knights game
e2e4 e7e5 g1f3 b8c6 b1c3 
 ¯ Schlechter variation
e2e4 e7e5 g1f3 b8c6 b1c3 f8b4 c3d5 g8f6 
 ¯ Winawer defence (Gothic defence)
e2e4 e7e5 g1f3 b8c6 b1c3 f7f5 
 ¯ Steinitz variation
e2e4 e7e5 g1f3 b8c6 b1c3 g7g6 
 ¯ Steinitz, Rosenthal variation
e2e4 e7e5 g1f3 b8c6 b1c3 g7g6 d2d4 e5d4 c3d5 
C46 Four knights game
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 
 ¯ Schultze-Mueller gambit
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f3e5 
 ¯ Italian variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1c4 
 ¯ Gunsberg variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 a2a3 
 ¯ Scotch variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 
 ¯ Scotch, Krause variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 f8b4 f3e5 
 ¯ Scotch, 4...exd4
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 e5d4 
 ¯ Belgrade gambit
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 d2d4 e5d4 c3d5 
 ¯ Spanish variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 
 ¯ Ranken variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 a7a6 b5c6 
 ¯ Spielmann variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 a7a6 b5c6 d7c6 f3e5 f6e4 c3e4 d8d4 e1g1 d4e5 f1e1 c8e6 d2d4 e5d5 
 ¯ Spanish, classical defence
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8c5 
 ¯ Bardeleben variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8c5 e1g1 e8g8 f3e5 c6e5 d2d4 c5d6 f2f4 e5c6 e4e5 d6b4 
 ¯ Marshall variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8c5 e1g1 e8g8 f3e5 c6d4 
 ¯ Rubinstein counter-gambit
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 
 ¯ Rubinstein counter-gambit, Bogolyubov variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 f3e5 d8e7 f2f4 
 ¯ Rubinstein counter-gambit, 5.Be2
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 b5e2 
 ¯ Rubinstein counter-gambit Maroczy variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 b5e2 d4f3 e2f3 f8c5 e1g1 e8g8 d2d3 d7d6 c3a4 c5b6 
 ¯ Rubinstein counter-gambit, exchange variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 f3d4 
 ¯ Rubinstein counter-gambit, Henneberger variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 c6d4 e1g1 
 ¯ double Ruy Lopez
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 
 ¯ Gunsberg counter-attack
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 c3d5 f6d5 e4d5 e5e4 
 ¯ double Ruy Lopez
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 
 ¯ Alatortsev variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d8e7 c3e2 d7d5 
C49 Four knights
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3 
 ¯ Janowski variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3 b2c3 d7d6 f1e1 
 ¯ Svenonius variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 b4c3 b2c3 d7d5 
 ¯ symmetrical variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 
 ¯ symmetrical, Metger unpin
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 b4c3 b2c3 d8e7 
 ¯ symmetrical, Capablanca variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 b4c3 b2c3 d8e7 f1e1 c6d8 d3d4 c8g4 
 ¯ symmetrical, Pillsbury variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c6e7 
 ¯ symmetrical, Blake variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c6e7 f3h4 c7c6 b5c4 d6d5 c4b3 d8d6 
 ¯ symmetrical, Tarrasch variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c1g5 c8e6 
 ¯ symmetrical, Maroczy system
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 d2d3 d7d6 c3e2 
 ¯ Nimzovich (Paulsen) variation
e2e4 e7e5 g1f3 b8c6 b1c3 g8f6 f1b5 f8b4 e1g1 e8g8 b5c6 
C50 King's pawn game
e2e4 e7e5 g1f3 b8c6 f1c4 
C50 Blackburne shilling gambit
e2e4 e7e5 g1f3 b8c6 f1c4 c6d4 f3e5 d8g5 e5f7 g5g2 h1f1 g2e4 c4e2 d4f3 -
C50 Rousseau gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f7f5 
C50 Hungarian defence
e2e4 e7e5 g1f3 b8c6 f1c4 f8e7 
 ¯ Tartakower variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8e7 d2d4 e5d4 c2c3 g8f6 e4e5 f6e4 
C50 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 
 ¯ four knights variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b1c3 g8f6 
 ¯ Jerome gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c4f7 
C50 Giuoco Pianissimo
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 
 ¯ Dubois variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 f7f5 f3g5 f5f4 
C50 Giuoco Pianissimo
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 g8f6 
 ¯ Italian four knights variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 g8f6 b1c3 
 ¯ Canal variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 d2d3 g8f6 b1c3 d7d6 c1g5 
C51 Evans gambit declined
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 
C51 Evans gambit declined, Lange variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 g8h6 
C51 Evans gambit declined, Pavlov variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 g8h6 d2d4 d7d6 c1h6 d6e5 h6g7 h8g8 c4f7 e8f7 g7e5 d8g5 b1d2 
C51 Evans gambit declined, Hirschbach variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5 
C51 Evans gambit declined, Vasquez variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5 c4f7 e8e7 d1h5 
C51 Evans gambit declined, Hicken variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 b4b5 c6a5 f3e5 d8g5 d1f3 g5e5 f3f7 e8d8 c1b2 
C51 Evans gambit declined, 5.a4
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 a2a4 
C51 Evans gambit declined, Showalter variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 a2a4 a7a6 b1c3 
C51 Evans gambit declined, Cordel variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b6 c1b2 
C51 Evans counter-gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 d7d5 
C51 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 
 ¯ normal variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 
 ¯ Ulvestad variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 d4d5 c6a5 c1b2 
 ¯ Paulsen variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 d4d5 c6a5 c1b2 g8e7 
 ¯ Morphy attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 
 ¯ Goering attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c6a5 c1g5 
 ¯ Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c6a5 c1g5 f7f6 g5e3 
C51 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 
 ¯ Fraser attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 d1a4 
 ¯ Fraser-Mortimer attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4c5 d2d4 e5d4 e1g1 d7d6 c3d4 c5b6 b1c3 c8g4 d1a4 g4d7 a4b3 c6a5 c4f7 e8f8 b3c2 
 ¯ Stone-Ware variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4d6 
 ¯ Mayet defence
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4f8 
 ¯ 5...Be7
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4e7 
 ¯ Cordel variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4e7 d2d4 c6a5 
C52 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 
 ¯ compromised defence
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3 
 ¯ compromised defence, Paulsen variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3 d1b3 d8f6 e4e5 f6g6 b1c3 g8e7 c1a3 
 ¯ compromised defence, Potter variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 e5d4 e1g1 d4c3 d1b3 d8f6 e4e5 f6g6 b1c3 g8e7 f1d1 
 ¯ Leonhardt variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 b7b5 
C52 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 
 ¯ Tartakower attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 d1b3 
 ¯ Levenfish variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 d1b3 d8d7 d4e5 d6e5 e1g1 a5b6 c1a3 c6a5 f3e5 
 ¯ Sokolsky variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 d2d4 d7d6 c1g5 
C52 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 
 ¯ Richardson attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 g8f6 d2d4 e8g8 f3e5 
C52 Evans gambit
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 
 ¯ Waller attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 e5d4 d1b3 
 ¯ Lasker defence
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 a5b6 
 ¯ Sanders-Alapin variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 c8d7 
 ¯ Alapin-Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 b2b4 c5b4 c2c3 b4a5 e1g1 d7d6 d2d4 c8g4 
C53 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 
 ¯ LaBourdonnais variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d7d6 d2d4 e5d4 c3d4 c5b6 
 ¯ close variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 
 ¯ centre-holding variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 
 ¯ Tarrasch variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 e1g1 g8f6 a2a4 a7a6 f1e1 d7d6 h2h3 
 ¯ Mestel variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 c1g5 
 ¯ Eisinger variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 d8e7 d2d4 c5b6 d4d5 c6b8 d5d6 
C53 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 
 ¯ Bird's attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 b2b4 
C53 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 
 ¯ Ghulam Kassim variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 f6e4 c4d5 e4f2 e1f2 d4c3 f2g3 
C53 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 d7d5 
 ¯ Anderssen variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 e4e5 d7d5 c4b5 f6e4 c3d4 c5b4 
C54 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 
 ¯ Krause variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 c1d2 f6e4 d2b4 c6b4 c4f7 e8f7 d1b3 d7d5 f3e5 f7f6 f2f3 
 ¯ Cracow variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 e1f1 
 ¯ Greco's attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 
 ¯ Greco variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3 
 ¯ Bernstein variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3 b2c3 b4c3 d1b3 d7d5 
 ¯ Aitken variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 e4c3 b2c3 b4c3 c1a3 
C54 Giuoco Piano
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 
 ¯ Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 b2c3 d7d5 c1a3 
 ¯ Moeller (Therkatz) attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5 
 ¯ Therkatz-Herzog variation
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5 c3f6 f1e1 c6e7 e1e4 d7d6 c1g5 f6g5 f3g5 e8g8 g5h7 
 ¯ Moeller, bayonet attack
e2e4 e7e5 g1f3 b8c6 f1c4 f8c5 c2c3 g8f6 d2d4 e5d4 c3d4 c5b4 b1c3 f6e4 e1g1 b4c3 d4d5 c3f6 f1e1 c6e7 e1e4 d7d6 g2g4 
C55 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 
 ¯ Rosentreter variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 h7h6 g5h4 g7g5 f2f4 
C55 Giuoco piano
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 d7d6 
 ¯ Holzhausen attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 e1g1 f8c5 d2d4 c5d4 f3d4 c6d4 c1g5 d7d6 f2f4 d8e7 f4e5 d6e5 b1c3 
C55 Two knights defence (Modern bishop's opening)
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d3 
C55 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 
C55 Two knights defence, Keidanz variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e4e5 d7d5 c4b5 f6e4 f3d4 f8c5 d4c6 c5f2 e1f1 d8h4 
C55 Two knights defence, Perreux variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 f3g5 
C55 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 
 ¯ Max Lange attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 
 ¯ Max Lange attack, Berger variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 g2g4 f5g6 c3e4 c5b6 f2f4 e8c8 
 ¯ Max Lange attack, Marshall variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 c3e4 
 ¯ Max Lange attack, Rubinstein variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 d8d5 b1c3 d5f5 c3e4 c5f8 
 ¯ Max Lange attack, Loman defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f3g5 g7g6 
 ¯ Max Lange attack, Schlechter variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 d7d5 e5f6 d5c4 f1e1 c8e6 f6g7 
 ¯ Max Lange attack, Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 f6g4 
 ¯ Max Lange attack, Krause variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f8c5 e4e5 f6g4 c2c3 
C56 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 
 ¯ Yurdansky attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 f1e1 d7d5 c4d5 d8d5 b1c3 d5a5 c3e4 c8e6 c1g5 h7h6 g5h4 g7g5 e4f6 e8e7 b2b4 
 ¯ Canal variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 d2d4 e5d4 e1g1 f6e4 f1e1 d7d5 b1c3 
C57 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 
 ¯ Wilkes Barre (Traxler) variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 f8c5 
 ¯ Ulvestad variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 b7b5 
 ¯ Fritz variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6d4 
 ¯ Fritz, Gruber variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6d4 c2c3 b7b5 c4f1 f6d5 g5e4 
 ¯ Lolli attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 d2d4 
 ¯ Pincus variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 d2d4 f8b4 
 ¯ Fegatello attack
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 g5f7 
 ¯ Fegatello attack, Leonhardt variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 g5f7 e8f7 d1f3 f7e6 b1c3 c6b4 f3e4 c7c6 a2a3 b4a6 d2d4 a6c7 
 ¯ Fegatello attack, Polerio defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 f6d5 g5f7 e8f7 d1f3 f7e6 b1c3 c6e7 
C58 two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 
 ¯ Kieseritsky variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3 
 ¯ Yankovich variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3 h7h6 g5f3 e5e4 d1e2 a5c4 d3c4 f8c5 f3d2 
 ¯ Maroczy variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 d2d3 h7h6 g5f3 e5e4 d1e2 a5c4 d3c4 f8e7 
C58 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 
 ¯ Bogolyubov variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 
 ¯ Paoli variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 d8c7 b5d3 
 ¯ Colman variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 a8b8 
 ¯ Blackburne variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 d1f3 c6b5 
C58 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 
C59 Two knights defence
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 
 ¯ Knorre variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5f3 e5e4 f3e5 f8d6 d2d4 d8c7 c1d2 
 ¯ Goering variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5f3 e5e4 f3e5 d8c7 
 ¯ Steinitz variation
e2e4 e7e5 g1f3 b8c6 f1c4 g8f6 f3g5 d7d5 e4d5 c6a5 c4b5 c7c6 d5c6 b7c6 b5e2 h7h6 g5h3 
C60 Ruy Lopez (Spanish opening)
e2e4 e7e5 g1f3 b8c6 f1b5 
 ¯ Nuernberg variation
e2e4 e7e5 g1f3 b8c6 f1b5 f7f6 
 ¯ Pollock defence
e2e4 e7e5 g1f3 b8c6 f1b5 c6a5 
 ¯ Lucena defence
e2e4 e7e5 g1f3 b8c6 f1b5 f8e7 
 ¯ Vinogradov variation
e2e4 e7e5 g1f3 b8c6 f1b5 d8e7 
 ¯ Brentano defence
e2e4 e7e5 g1f3 b8c6 f1b5 g7g5 
 ¯ fianchetto (Smyslov/Barnes) defence
e2e4 e7e5 g1f3 b8c6 f1b5 g7g6 
 ¯ Cozio defence
e2e4 e7e5 g1f3 b8c6 f1b5 g8e7 
 ¯ Cozio defence, Paulsen variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8e7 b1c3 g7g6 
 ¯ Bird's defence
e2e4 e7e5 g1f3 b8c6 f1b5 c6d4 
 ¯ Bird's defence, Paulsen variation
e2e4 e7e5 g1f3 b8c6 f1b5 c6d4 f3d4 e5d4 e1g1 g8e7 
 ¯ old Steinitz defence
e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 
 ¯ old Steinitz defence, Nimzovich attack
e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 d2d4 c8d7 b1c3 g8f6 b5c6 
 ¯ old Steinitz defence, semi-Duras variation
e2e4 e7e5 g1f3 b8c6 f1b5 d7d6 d2d4 c8d7 c2c4 
 ¯ Schliemann defence
e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 
 ¯ Schliemann defence, Berger variation
e2e4 e7e5 g1f3 b8c6 f1b5 f7f5 b1c3 
 ¯ classical (Cordel) defence
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 
 ¯ classical defence, Zaitsev variation
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 e1g1 c6d4 b2b4 
 ¯ classical defence, 4.c3
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 
 ¯ classical defence, Benelux variation  
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 g8f6 e1g1 e8g8 d2d4 c5b6 
 ¯ classical defence, Charousek variation
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 c5b6 
 ¯ classical defence, Boden variation
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 d8e7 
 ¯ Cordel gambit
e2e4 e7e5 g1f3 b8c6 f1b5 f8c5 c2c3 f7f5 
 ¯ Berlin defence
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 
 ¯ Berlin defence, Nyholm attack
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d4 e5d4 e1g1 
 ¯ Berlin defence, Mortimer variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 c6e7 
 ¯ Berlin defence, Mortimer trap
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 c6e7 f3e5 c7c6 
 ¯ Berlin defence, Anderssen variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 d7d6 b5c6 
 ¯ Berlin defence, Duras variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 d7d6 c2c4 
 ¯ Berlin defence, Kaufmann variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 d2d3 f8c5 c1e3 
 ¯ Berlin defence, 4.O-O
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 
 ¯ Berlin defence, Beverwijk variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f8c5 
 ¯ Berlin defence, 4.O-O, d6
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 
 ¯ Berlin defence, hedgehog variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 
 ¯ Berlin defence, Tarrasch trap
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 f1e1 e8g8 
 ¯ closed Berlin defence, Bernstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 c1g5 
 ¯ closed Berlin defence, Showalter variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 f8e7 b5c6 
 ¯ closed Berlin defence, Wolf variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 c8d7 b1c3 e5d4 
 ¯ closed Berlin defence, Chigorin variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 d7d6 d2d4 f6d7 
 ¯ Berlin defence, open variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 
 ¯ open Berlin defence, l'Hermet variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 d4e5 
 ¯ open Berlin defence, Showalter variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 e4d6 b5a4 
 ¯ open Berlin defence, 5...Be7
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 
 ¯ Berlin defence, Rio de Janeiro variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 b1c3 e8g8 f1e1 b7c5 f3d4 c5e6 c1e3 e6d4 e3d4 c6c5 
 ¯ Berlin defence, Zukertort variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 c2c4 
 ¯ Berlin defence, Pillsbury variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 b2b3 
 ¯ Berlin defence, Winawer attack
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6b7 f3d4 
 ¯ Berlin defence, Cordel variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 e4d6 b5c6 b7c6 d4e5 d6f5 
 ¯ Berlin defence, Trifunovic variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d1e2 d7d5 
 ¯ Berlin defence, Minckwitz variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 f8e7 d4e5 
 ¯ Berlin defence, Rosenthal variation
e2e4 e7e5 g1f3 b8c6 f1b5 g8f6 e1g1 f6e4 d2d4 a7a6 
 ¯ exchange variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 
 ¯ exchange, Alekhine variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 d2d4 e5d4 d1d4 d8d4 f3d4 c8d7 
 ¯ exchange, Keres variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 b1c3 
 ¯ exchange, Romanovsky variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 b1c3 f7f6 d2d3 
 ¯ exchange variation, 5.O-O
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 
 ¯ exchange variation, Alapin gambit
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 c8g4 h2h3 h7h5 
 ¯ exchange, Gligoric variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 f7f6 
 ¯ exchange, Bronstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5c6 d7c6 e1g1 d8d6 
C70 Ruy Lopez
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 
 ¯ fianchetto defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g7g6 
 ¯ Cozio defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8e7 
 ¯ Bird's defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 c6d4 
 ¯ Alapin's defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f8b4 
 ¯ Classical defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f8c5 
 ¯ Caro variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 
 ¯ Graz variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 a4b3 f8c5 
 ¯ Taimanov (chase/wing/accelerated counterthrust) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 b7b5 a4b3 c6a5 
 ¯ Schliemann defence deferred
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 f7f5 
 ¯ modern Steinitz defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 
 ¯ Noah's ark trap
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 d2d4 b7b5 a4b3 c6d4 f3d4 e5d4 d1d4 c7c5 
 ¯ modern Steinitz defence, Three knights variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 b1c3 
 ¯ modern Steinitz defence, Duras (Keres) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c4 
 ¯ modern Steinitz defence, 5.O-O
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 e1g1 
 ¯ modern Steinitz defence, Richter variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 a4c6 b7c6 d2d4 
 ¯ modern Steinitz defence, Alapin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 a4c6 b7c6 d2d4 f7f6 
 ¯ modern Steinitz defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 
 ¯ modern Steinitz defence, siesta variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 f7f5 
 ¯ Siesta, Kopayev variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 f7f5 e4f5 c8f5 e1g1 
 ¯ modern Steinitz defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 c8d7 
 ¯ modern Steinitz defence, Rubinstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 c8d7 d2d4 g8e7 
 ¯ modern Steinitz defence, fianchetto (Bronstein) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 d7d6 c2c3 c8d7 d2d4 g7g6 
 ¯ Morphy defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 
 ¯ four knights (Tarrasch) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 b1c3 
 ¯ Treybal (Bayreuth) variation (exchange var. deferred)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 a4c6 
 ¯ Wormald (Alapin) attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d1e2 
 ¯ Wormald attack, Gruenfeld variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d1e2 b7b5 a4b3 f8e7 d2d4 d7d6 c2c3 c8g4 
 ¯ Anderssen variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d2d3 
 ¯ Morphy defence, Duras variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 d2d3 d7d6 c2c4 
 ¯ 5.O-O
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 
 ¯ Wing attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 f8e7 a2a4 
 ¯ ...b5 & ...d6
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 d7d6 
 ¯ Rabinovich variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 d7d6 f3g5 d6d5 e4d5 c6d4 f1e1 f8c5 e1e5 e8f8 
 ¯ Archangelsk (counterthrust) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 b7b5 a4b3 c8b7 
 ¯ Moeller defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8c5 
 ¯ Steinitz defence deferred (Russian defence)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 
 ¯ Steinitz defence deferred, Lipnitsky variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 c8g4 
 ¯ Steinitz defence deferred, Rubinstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 f6e4 
 ¯ Steinitz defence deferred, Boleslavsky variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 d7d6 a4c6 b7c6 d2d4 f6e4 f1e1 f7f5 d4e5 d6d5 b1c3 
 ¯ open (Tarrasch) defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 
 ¯ open, Tartakower variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d1e2 
 ¯ open, Knorre variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 b1c3 
 ¯ open, 6.d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 
 ¯ open, Riga variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 e5d4 
 ¯ open, 6.d4 b5
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 
 ¯ open, Friess attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 f3e5 
 ¯ open, Richter variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 d4d5 
 ¯ open, 7.Bb3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 
 ¯ open, Schlechter defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 a2a4 c6d4 
 ¯ open, Berger variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 a2a4 c6d4 f3d4 e5d4 b1c3 
 ¯ open, Harksen gambit
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 c2c4 
 ¯ open, 8.de
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 
 ¯ open, Zukertort variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c6e7 
 ¯ open, 8...Be6
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 
 ¯ open, Bernstein variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 b1d2 
 ¯ open, Bernstein variation, Karpov gambit
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 b1d2 e4c5 c2c3 d5d4 f3g5 
 ¯ open, Howell attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2 
 ¯ open, Howell attack, Ekstroem variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2 f8e7 f1d1 e8g8 c2c4 b5c4 b3c4 d8d7 
 ¯ open, Howell attack, Adam variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 d1e2 f8e7 c2c4 
 ¯ open, 9.c3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 
 ¯ open, Berlin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 e4c5 
 ¯ open, Italian variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 
 ¯ open, St. Petersburg variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 b1d2 
 ¯ open, Dilworth variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 b1d2 e8g8 b3c2 e4f2 
 ¯ open, Motzko attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 d1d3 
 ¯ open, Motzko attack, Nenarokov variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8c5 d1d3 c6e7 
 ¯ open, classical defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 
 ¯ open, Malkin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 b1d2 e8g8 d1e2 
 ¯ open, 9...Be7, 10.Re1
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 f1e1 
 ¯ open, Tarrasch trap
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 f1e1 e8g8 f3d4 d8d7 d4e6 f7e6 e1e4 
 ¯ open, Breslau variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f6e4 d2d4 b7b5 a4b3 d7d5 d4e5 c8e6 c2c3 f8e7 f1e1 e8g8 f3d4 c6e5 
 ¯ closed defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 
 ¯ closed, centre attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d2d4 
 ¯ closed, Basque gambit (North Spanish variation)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d2d4 e5d4 e4e5 f6e4 c2c3 
 ¯ Exchange variation doubly deferred (DERLD)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 a4c6 
 ¯ Worrall attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2 
 ¯ Worrall attack, sharp line
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2 b7b5 a4b3 e8g8 
 ¯ Worrall attack, solid line
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 d1e2 b7b5 a4b3 d7d6 
 ¯ closed, Averbach variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 d7d6 
 ¯ closed
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 
 ¯ closed, Leonhardt variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 c6a5 b3c2 c7c5 d2d4 d8c7 h2h3 a5c6 d4d5 c6b8 b1d2 g7g5 
 ¯ closed, Balla variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 c2c3 c6a5 b3c2 c7c5 d2d4 d8c7 a2a4 
 ¯ closed, 7...d6, 8.d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 d2d4 
 ¯ Noah's ark trap
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 d7d6 d2d4 c6d4 f3d4 e5d4 d1d4 c7c5 
 ¯ Trajkovic counter-attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 c8b7 
 ¯ closed, 7...O-O
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 
 ¯ closed, anti-Marshall 8.a4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 a2a4 
 ¯ closed, 8.c3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 
 ¯ Marshall counter-attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 
 ¯ Marshall counter-attack, 11...c6
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 
 ¯ Marshall, Kevitz variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 b3d5 c6d5 d2d4 e7d6 e5e3 
 ¯ Marshall, main line, 12.d2d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4 
 ¯ Marshall, main line, 14...Qh3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4 e7d6 e5e1 d8h4 g2g3 h4h3 
 ¯ Marshall, main line, Spassky variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 f6d5 f3e5 c6e5 e1e5 c7c6 d2d4 e7d6 e5e1 d8h4 g2g3 h4h3 c1e3 c8g4 d1d3 a8e8 b1d2 e8e6 a2a4 h3h5 
 ¯ Marshall, Herman Steiner variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d5 e4d5 e5e4 
 ¯ closed (with ...d6)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 
 ¯ closed, Pilnik variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 d2d3 
 ¯ closed, Lutikov variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 b3c2 
 ¯ closed, Suetin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 a2a3 
 ¯ closed, 9.d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 d2d4 
 ¯ closed, Bogolyubov variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 d2d4 c8g4 
 ¯ closed, 9.h3
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 
 ¯ closed, Keres (9...a5) variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 a6a5 
 ¯ closed, Kholmov variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c8e6 
 ¯ closed, Ragozin-Petrosian (`Keres') variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 f6d7 
 ¯ closed, Flohr-Zaitsev system (Lenzerheide variation)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c8b7 
 ¯ closed, Smyslov defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 h7h6 
 ¯ closed, Breyer defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 
 ¯ closed, Breyer, 10.d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 d2d4 
 ¯ closed, Breyer, Borisenko variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 d2d4 b8d7 
 ¯ closed, Breyer, Gligoric variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 d2d4 b8d7 b1d2 c8b7 b3c2 c7c5 
 ¯ closed, Breyer, Simagin variation
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6b8 d2d4 b8d7 f3h4 
 ¯ closed (8...Na5)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 
 ¯ closed, Rossolimo defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c6 d2d4 d8c7 
 ¯ closed (10...c5)
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 
 ¯ closed, Borisenko defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 a5c6 
 ¯ closed, Keres (...Nd7) defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 f6d7 
 ¯ closed, Chigorin defence
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 
 ¯ closed, Chigorin, Yugoslav system
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 c8d7 d2f1 f8e8 f1e3 g7g6 
 ¯ closed, Chigorin, 12...Nc6
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 a5c6 
 ¯ closed, Chigorin, Rauzer attack
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 a5c6 d4c5 
 ¯ closed, Chigorin, 12...c5d4
e2e4 e7e5 g1f3 b8c6 f1b5 a7a6 b5a4 g8f6 e1g1 f8e7 f1e1 b7b5 a4b3 e8g8 c2c3 d7d6 h2h3 c6a5 b3c2 c7c5 d2d4 d8c7 b1d2 c5d4 c3d4 
D00 Queen's pawn game
d2d4 d7d5 
D00 Queen's pawn, Mason variation
d2d4 d7d5 c1f4 
D00 Queen's pawn, Mason variation, Steinitz counter-gambit
d2d4 d7d5 c1f4 c7c5 
D00 Levitsky attack (Queen's bishop attack)
d2d4 d7d5 c1g5 
D00 Blackmar gambit
d2d4 d7d5 e2e4 
 ¯ stonewall attack
d2d4 d7d5 e2e3 g8f6 f1d3 
 ¯ Chigorin variation
d2d4 d7d5 b1c3 
 ¯ Anti-Veresov
d2d4 d7d5 b1c3 c8g4 
D00 Blackmar-Diemer gambit
d2d4 d7d5 b1c3 g8f6 e2e4 
 ¯ Euwe defence
d2d4 d7d5 b1c3 g8f6 e2e4 d5e4 f2f3 e4f3 g1f3 e7e6 
 ¯ Lemberg counter-gambit
d2d4 d7d5 b1c3 g8f6 e2e4 e7e5 
D01 Richter-Veresov attack
d2d4 d7d5 b1c3 g8f6 c1g5 
D01 Richter-Veresov attack, Veresov variation
d2d4 d7d5 b1c3 g8f6 c1g5 c8f5 g5f6 
D01 Richter-Veresov attack, Richter variation
d2d4 d7d5 b1c3 g8f6 c1g5 c8f5 f2f3 
D02 Queen's pawn game
d2d4 d7d5 g1f3 
D02 Queen's pawn game, Chigorin variation
d2d4 d7d5 g1f3 b8c6 
D02 Queen's pawn game, Krause variation
d2d4 d7d5 g1f3 c7c5 
D02 Queen's pawn game
d2d4 d7d5 g1f3 g8f6 
D02 Queen's bishop game
d2d4 d7d5 g1f3 g8f6 c1f4 
D03 Torre attack (Tartakower variation)
d2d4 d7d5 g1f3 g8f6 c1g5 
D04 Queen's pawn game
d2d4 d7d5 g1f3 g8f6 e2e3 
D05 Queen's pawn game
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 
D05 Queen's pawn game, Zukertort variation
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 b1d2 c7c5 b2b3 
D05 Queen's pawn game
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 f1d3 
D05 Queen's pawn game, Rubinstein (Colle-Zukertort) variation
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 f1d3 c7c5 b2b3 
D05 Colle system
d2d4 d7d5 g1f3 g8f6 e2e3 e7e6 f1d3 c7c5 c2c3 
D06 Queen's Gambit
d2d4 d7d5 c2c4 
 ¯ Grau (Sahovic) defence
d2d4 d7d5 c2c4 c8f5 
 ¯ Marshall defence
d2d4 d7d5 c2c4 g8f6 
 ¯ symmetrical (Austrian) defence
d2d4 d7d5 c2c4 c7c5 
 ¯ Chigorin defence
d2d4 d7d5 c2c4 b8c6 
 ¯ Chigorin defence, Janowski variation
d2d4 d7d5 c2c4 b8c6 b1c3 d5c4 g1f3 
 ¯ Albin counter-gambit
d2d4 d7d5 c2c4 e7e5 
 ¯ Albin counter-gambit, Lasker trap
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 e2e3 f8b4 c1d2 d4e3 
 ¯ Albin counter-gambit
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 
 ¯ Albin counter-gambit, Alapin variation
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 
 ¯ Albin counter-gambit, Krenosz variation
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 c8g4 h2h3 g4f3 d2f3 f8b4 c1d2 d8e7 
 ¯ Albin counter-gambit, Janowski variation
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 f7f6 
 ¯ Albin counter-gambit, Balogh variation
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 b1d2 d8e7 
 ¯ Albin counter-gambit, 5.g3
d2d4 d7d5 c2c4 e7e5 d4e5 d5d4 g1f3 b8c6 g2g3 
D10 QGD Slav defence
d2d4 d7d5 c2c4 c7c6 
D10 QGD Slav defence, Alekhine variation
d2d4 d7d5 c2c4 c7c6 b1c3 d5c4 e2e4 
 ¯ Winawer counter-gambit
d2d4 d7d5 c2c4 c7c6 b1c3 e7e5 
 ¯ exchange variation
d2d4 d7d5 c2c4 c7c6 c4d5 
 ¯ 3.Nf3
d2d4 d7d5 c2c4 c7c6 g1f3 
 ¯ Breyer variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1d2 
 ¯ 4.e3
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 
 ¯ 4.e3 Bf5
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 
 ¯ Landau variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 d1b3 d8c8 c1d2 e7e6 b1a3 
 ¯ exchange variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 b1c3 
 ¯ Amsterdam variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 e2e3 c8f5 c4d5 c6d5 b1c3 e7e6 f3e5 f6d7 
 ¯ exchange variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c4d5 c6d5 
 ¯ exchange variation, 6.Bf4 Bf5
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c4d5 c6d5 b1c3 b8c6 c1f4 c8f5 
 ¯ exchange, Trifunovic variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 c4d5 c6d5 b1c3 b8c6 c1f4 c8f5 e2e3 e7e6 d1b3 f8b4 
 ¯ 4.Nc3
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 
 ¯ Suechting variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d8b6 
 ¯ Schlechter variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 g7g6 
D15 QGD Slav accepted
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 
 ¯ 5.e3 (Alekhine variation)
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e3 
 ¯ Slav gambit
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e4 
 ¯ Tolush-Geller gambit
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 e2e4 b7b5 e4e5 
 ¯ Alapin variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 
 ¯ Smyslov variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 b8a6 e2e4 c8g4 
 ¯ Soultanbeieff variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 e7e6 
 ¯ Steiner variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8g4 
 ¯ Czech defence
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 
 ¯ Krause attack
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 
 ¯ Carlsbad variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 b8d7 e5c4 d8c7 g2g3 e7e5 
 ¯ Wiesbaden variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 f3e5 e7e6 
 ¯ Dutch variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 
 ¯ Dutch, Lasker variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 b8a6 
 ¯ Dutch variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1 
 ¯ Dutch variation, main line
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1 e8g8 d1e2 
 ¯ Dutch, Saemisch variation
d2d4 d7d5 c2c4 c7c6 g1f3 g8f6 b1c3 d5c4 a2a4 c8f5 e2e3 e7e6 f1c4 f8b4 e1g1 e8g8 d1e2 f6e4 g2g4 
D20 Queen's gambit accepted
d2d4 d7d5 c2c4 d5c4 
 ¯ 3.e4
d2d4 d7d5 c2c4 d5c4 e2e4 
 ¯ Linares variation
d2d4 d7d5 c2c4 d5c4 e2e4 c7c5 d4d5 g8f6 b1c3 b7b5 
 ¯ Schwartz defence
d2d4 d7d5 c2c4 d5c4 e2e4 f7f5 
 ¯ 3.Nf3
d2d4 d7d5 c2c4 d5c4 g1f3 
 ¯ Ericson variation
d2d4 d7d5 c2c4 d5c4 g1f3 b7b5 
 ¯ Alekhine defense, Borisenko-Furman variation
d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e4 
 ¯ Alekhine defence
d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 
 ¯ Alekhine defence, Alatortsev variation
d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e3 c8g4 f1c4 e7e6 d4d5 
 ¯ Haberditz variation
d2d4 d7d5 c2c4 d5c4 g1f3 a7a6 e2e3 b7b5 
D23 Queen's gambit accepted
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 
 ¯ Mannheim variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 d1a4 
D24 QGA, 4.Nc3
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 b1c3 
D24 QGA, Bogolyubov variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 b1c3 a7a6 e2e4 
D25 QGA, 4.e3
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 
D25 QGA, Smyslov variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 g7g6 
D25 QGA, Janowsky-Larsen variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 c8g4 
D25 QGA, Flohr variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 c8e6 
 ¯ 4...e6
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 
 ¯ classical variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 
 ¯ classical, Furman variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 d1e2 a7a6 d4c5 f8c5 e1g1 b8c6 e3e4 b7b5 e4e5 
 ¯ classical variation, 6.O-O
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 
 ¯ classical, Steinitz variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 c5d4 
 ¯ classical, 6...a6
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 
 ¯ classical, Rubinstein variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 a2a4 
 ¯ classical, Geller variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 e3e4 
 ¯ classical, 7.Qe2
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 
 ¯ classical, 7...b5
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 
 ¯ classical, Flohr variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 b8c6 f1d1 c5c4 b3c2 c6b4 b1c3 b4c2 e2c2 c8b7 d4d5 d8c7 
 ¯ classical, 8...Bb7
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 c8b7 
 ¯ classical, Smyslov variation
d2d4 d7d5 c2c4 d5c4 g1f3 g8f6 e2e3 e7e6 f1c4 c7c5 e1g1 a7a6 d1e2 b7b5 c4b3 c8b7 f1d1 b8d7 b1c3 f8d6 
D30 Queen's gambit declined
d2d4 d7d5 c2c4 e7e6 
D30 QGD Slav
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 
 ¯ Stonewall variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 f6e4 f1d3 f7f5 
D30 QGD Slav
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 b8d7 
 ¯ Semmering variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 b8d7 f1d3 c6c5 
 ¯ Spielmann variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 e2e3 c7c6 b1d2 g7g6 
D30 QGD
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 
 ¯ Capablanca variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 b8d7 e2e3 c7c6 b1d2 
 ¯ Vienna variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 f8b4 
 ¯ Capablanca-Duras variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 h7h6 
 ¯ Hastings variation
d2d4 d7d5 c2c4 e7e6 g1f3 g8f6 c1g5 h7h6 g5f6 d8f6 b1c3 c7c6 d1b3 
 ¯ 3.Nc3
d2d4 d7d5 c2c4 e7e6 b1c3 
 ¯ Janowski variation
d2d4 d7d5 c2c4 e7e6 b1c3 a7a6 
 ¯ Alapin variation
d2d4 d7d5 c2c4 e7e6 b1c3 b7b6 
 ¯ Charousek (Petrosian) variation
d2d4 d7d5 c2c4 e7e6 b1c3 f8e7 
 ¯ semi-Slav
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 
 ¯ semi-Slav, Noteboom variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 
 ¯ semi-Slav, Koomen variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 a2a4 f8b4 e2e3 b7b5 c1d2 d8e7 
 ¯ semi-Slav, Junge variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 a2a4 f8b4 e2e3 b7b5 c1d2 d8b6 
 ¯ semi-Slav, Abrahams variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 g1f3 d5c4 a2a4 f8b4 e2e3 b7b5 c1d2 a7a5 
 ¯ semi-Slav, Marshall gambit
d2d4 d7d5 c2c4 e7e6 b1c3 c7c6 e2e4 
 ¯ Tarrasch defence
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 
 ¯ Tarrasch, von Hennig-Schara gambit
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 c5d4 
 ¯ Tarrasch defence, 4.cd ed
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 
 ¯ Tarrasch defence, Tarrasch gambit
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 d4c5 d5d4 c3a4 b7b5 
 ¯ Tarrasch defence, Marshall gambit
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 e2e4 
 ¯ Tarrasch defence
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 
 ¯ Tarrasch, Schlechter-Rubinstein system
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 
 ¯ Tarrasch, Folkestone (Swedish) variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 c5c4 
 ¯ Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 c5c4 e2e4 
 ¯ Tarrasch, Prague variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 
 ¯ Tarrasch, Wagner variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 c8g4 
 ¯ Tarrasch, Prague variation, 7...Be7
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 
 ¯ Tarrasch, Prague variation, Normal position
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 
 ¯ Tarrasch, Reti variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 d4c5 e7c5 c3a4 
 ¯ Tarrasch, Prague variation, 9.Bg5
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 
 ¯ Tarrasch, Bogolyubov variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c8e6 a1c1 c5c4 
 ¯ Tarrasch, Stoltz variation
d2d4 d7d5 c2c4 e7e6 b1c3 c7c5 c4d5 e6d5 g1f3 b8c6 g2g3 g8f6 f1g2 f8e7 e1g1 e8g8 c1g5 c8e6 a1c1 b7b6 
 ¯ 3...Nf6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 
 ¯ Harrwitz attack
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1f4 
 ¯ exchange variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 
 ¯ exchange, Saemisch variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 g1f3 b8d7 c1f4 
 ¯ exchange, positional line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 c1g5 
 ¯ exchange, chameleon variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 c1g5 f8e7 e2e3 e8g8 f1d3 b8d7 d1c2 f8e8 g1e2 d7f8 e1c1 
 ¯ exchange, positional line, 5...c6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 c1g5 c7c6 
 ¯ exchange, positional line, 6.Qc2
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c4d5 e6d5 c1g5 c7c6 d1c2 
 ¯ 4.Nf3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 
 ¯ classical variation (5.Bf4)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 f8e7 c1f4 
 ¯ Ragozin variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 f8b4 
 ¯ Ragozin, Vienna variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 f8b4 c1g5 d5c4 
 ¯ Semi-Tarrasch defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 
 ¯ Semi-Tarrasch, symmetrical variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 e2e3 b8c6 f1d3 f8d6 e1g1 e8g8 
 ¯ Semi-Tarrasch, Levenfish variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 e2e3 b8c6 f1d3 f8d6 e1g1 e8g8 d1e2 d8e7 d4c5 d6c5 e3e4 
 ¯ Semi-Tarrasch defence, Pillsbury variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c1g5 
 ¯ Semi-Tarrasch, 5.cd
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 
 ¯ Semi-Tarrasch, Kmoch variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e4 d5c3 b2c3 c5d4 c3d4 f8b4 c1d2 b4d2 d1d2 e8g8 f1b5 
 ¯ Semi-Tarrasch, San Sebastian variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e4 d5c3 b2c3 c5d4 c3d4 f8b4 c1d2 d8a5 
 ¯ Semi-Tarrasch with e3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e3 
 ¯ Semi-Tarrasch, 7.Bd3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c5 c4d5 f6d5 e2e3 b8c6 f1d3 
D43 QGD semi-Slav
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 
 ¯ Hastings variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 h7h6 g5f6 d8f6 d1b3 
 ¯ 5.Bg5 dc
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 
 ¯ Botvinnik system (anti-Meran)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 
 ¯ Ekstrom variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 e5f6 g5h4 f3e5 
 ¯ anti-Meran gambit
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 
 ¯ anti-Meran, Lilienthal variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 h6g5 h4g5 b8d7 g2g3 
 ¯ anti-Meran, Szabo variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 h6g5 h4g5 b8d7 d1f3 
 ¯ anti-Meran, Alatortsev system
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 c1g5 d5c4 e2e4 b7b5 e4e5 h7h6 g5h4 g7g5 f3g5 f6d5 
 ¯ 5.e3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 
 ¯ stonewall defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 f6e4 f1d3 f7f5 
 ¯ accelerated Meran (Alekhine variation)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 a7a6 
 ¯ 5...Nd7
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 
 ¯ Stoltz variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 d1c2 
 ¯ Rubinstein (anti-Meran) system
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f3e5 
 ¯ 6.Bd3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 
 ¯ Bogolyubov variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 f8e7 
 ¯ Romih variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 f8b4 
 ¯ Chigorin defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 f8d6 
 ¯ 7.Bc4
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 
 ¯ Meran variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 
 ¯ neo-Meran (Lundin variation)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 b5b4 
 ¯ Meran, Wade variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 c8b7 
 ¯ Meran, 8...a6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 
 ¯ Meran, Pirc variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 b5b4 
 ¯ Meran
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 
 ¯ Meran, Reynolds' variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 d4d5 
 ¯ Meran, old main line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 
 ¯ Meran, Blumenfeld variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 
 ¯ Meran, Rabinovich variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 f6g4 
 ¯ Meran, Sozin variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 
 ¯ Meran, Stahlberg variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 d1f3 
 ¯ Meran, Sozin variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 e1g1 
 ¯ Meran, Rellstab attack
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 g1f3 c7c6 e2e3 b8d7 f1d3 d5c4 d3c4 b7b5 c4d3 a7a6 e3e4 c6c5 e4e5 c5d4 c3b5 d7e5 f3e5 a6b5 e1g1 d8d5 d1e2 c8a6 c1g5 
 ¯ 4.Bg5
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 
 ¯ Been-Koomen variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 
 ¯ Semi-Tarrasch, Krause variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 g1f3 c5d4 f3d4 e6e5 d4b5 a7a6 d1a4 
 ¯ Semi-Tarrasch, Primitive Pillsbury variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 g1f3 c5d4 d1d4 
 ¯ Semi-Tarrasch
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 c4d5 
 ¯ Canal (Venice) variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 c7c5 c4d5 d8b6 
 ¯ 4.Bg5 Nbd7
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 
 ¯ Rochlin variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 g1f3 c7c6 a1c1 d8a5 g5d2 
 ¯ Alekhine variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 g1f3 c7c6 e2e4 
D51 QGD
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 
 ¯ Manhattan variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 f8b4 
 ¯ 5...c6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 
 ¯ Capablanca anti-Cambridge Springs variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 a2a3 
D52 QGD
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 
 ¯ Cambridge Springs defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 
 ¯ Cambridge Springs defence, Bogoljubow variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 f3d2 f8b4 d1c2 
 ¯ Cambridge Springs defence, Argentine variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 f3d2 f8b4 d1c2 e8g8 g5h4 
 ¯ Cambridge Springs defence, Rubinstein variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 f3d2 d5c4 
 ¯ Cambridge Springs defence, Capablanca variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 g5f6 
 ¯ Cambridge Springs defence, 7.cd
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 c4d5 
 ¯ Cambridge Springs defence, Yugoslav variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 b8d7 e2e3 c7c6 g1f3 d8a5 c4d5 f6d5 
 ¯ 4.Bg5 Be7
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 
 ¯ Lasker variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 f6e4 
 ¯ 4.Bg5 Be7, 5.e3 O-O
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 
 ¯ Anti-neo-orthodox variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 a1c1 
 ¯ 6.Nf3
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 
 ¯ Pillsbury attack
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b7b6 f1d3 c8b7 c4d5 e6d5 f3e5 
 ¯ Neo-orthodox variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 
 ¯ Neo-orthodox variation, 7.Bxf6
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5f6 
 ¯ Petrosian variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5f6 e7f6 a1c1 c7c6 f1d3 b8d7 e1g1 d5c4 d3c4 
 ¯ Neo-orthodox variation, 7.Bh4
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 
 ¯ Lasker defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 
 ¯ Lasker defence, Teichmann variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 d1c2 
 ¯ Lasker defence, Russian variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 d1c2 e4f6 f1d3 d5c4 d3c4 c7c5 e1g1 b8c6 f1d1 c8d7 
 ¯ Lasker defence, main line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 c4d5 e4c3 b2c3 
 ¯ Lasker defence, Bernstein variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 f6e4 h4e7 d8e7 c4d5 e4c3 b2c3 e6d5 d1b3 e7d6 
 ¯ Tartakower (Makagonov-Bondarevsky) system
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 b7b6 
 ¯ Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 b7b6 c4d5 f6d5 
 ¯ Tartakower variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 h7h6 g5h4 b7b6 c4d5 f6d5 h4e7 d8e7 c3d5 e6d5 a1c1 c8e6 
 ¯ Orthodox defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 
 ¯ Orthodox defence, Botvinnik variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 f1d3 
 ¯ Orthodox defence, Rauzer variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 d1b3 
 ¯ Orthodox defence, Rubinstein variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 d1c2 
 ¯ Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 d1c2 c7c5 c4d5 
 ¯ Orthodox defence, 7.Rc1
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 
 ¯ Orthodox defence, Pillsbury attack
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 b7b6 c4d5 e6d5 f1d3 
 ¯ Orthodox defence, Capablanca variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 b7b6 c4d5 e6d5 f1b5 
 ¯ Orthodox defence, Swiss (Henneberger) variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 a7a6 
 ¯ Orthodox defence, Swiss, Karlsbad variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 a7a6 c4d5 
 ¯ Orthodox defence
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 
 ¯ Orthodox defence, Rubinstein attack (with Rc1)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 
 ¯ Orthodox defence, Rubinstein attack, Wolf variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 f6e4 
 ¯ Orthodox defence, Rubinstein attack, Karlsbad variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 a7a6 
 ¯ Orthodox defence, Rubinstein attack, Gruenfeld variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 a7a6 a2a3 
 ¯ Orthodox defence, Rubinstein attack, main line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 d1c2 a7a6 c4d5 
 ¯ Orthodox defence, Bd3 line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 
 ¯ Orthodox defence, Bd3 line, fianchetto variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 b7b5 
 ¯ Orthodox defence, Bd3 line, Capablanca freeing manoevre
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 
 ¯ Orthodox defence, Bd3 line, Janowski variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 h2h4 
 ¯ Orthodox defence, Bd3 line
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 
 ¯ Orthodox defence, Bd3 line, Alekhine variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 c3e4 
 ¯ Orthodox defence, Bd3 line, 11.O-O
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 
 ¯ Orthodox defence, classical variation
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 
 ¯ Orthodox defence, classical, 13.d1b1 (Maroczy)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d1b1 
 ¯ Orthodox defence, classical, 13.d1c2 (Vidmar)
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d1c2 
 ¯ Orthodox defence, classical, 13.de
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 e2e3 e8g8 g1f3 b8d7 a1c1 c7c6 f1d3 d5c4 d3c4 f6d5 g5e7 d8e7 e1g1 d5c3 c1c3 e6e5 d4e5 d7e5 f3e5 e7e5 
D70 Neo-Gruenfeld defence
d2d4 g8f6 c2c4 g7g6 f2f3 d7d5 
D70 Neo-Gruenfeld (Kemeri) defence
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 
D71 Neo-Gruenfeld, 5.cd
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 c4d5 f6d5 
D72 Neo-Gruenfeld, 5.cd, main line
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 c4d5 f6d5 e2e4 d5b6 g1e2 
D73 Neo-Gruenfeld, 5.Nf3
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 
D74 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 c4d5 f6d5 e1g1 
D75 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 c4d5 f6d5 e1g1 c7c5 b1c3 
D75 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 c4d5 f6d5 e1g1 c7c5 d4c5 
D76 Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 c4d5 f6d5 e1g1 d5b6 
D77 Neo-Gruenfeld, 6.O-O
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 e1g1 
D78 Neo-Gruenfeld, 6.O-O c6
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 e1g1 c7c6 
D79 Neo-Gruenfeld, 6.O-O, main line
d2d4 g8f6 c2c4 g7g6 g2g3 d7d5 f1g2 f8g7 g1f3 e8g8 e1g1 c7c6 c4d5 c6d5 
D80 Gruenfeld defence
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 
 ¯ Spike gambit
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g2g4 
 ¯ Stockholm variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1g5 
 ¯ Lundin variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1g5 f6e4 c3e4 d5e4 d1d2 c7c5 
 ¯ Russian variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 d1b3 
 ¯ 4.Bf4
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 
 ¯ Gruenfeld gambit
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 
 ¯ Gruenfeld gambit, Capablanca variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 a1c1 
 ¯ Gruenfeld gambit, Botvinnik variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 a1c1 c7c5 d4c5 c8e6 
 ¯ Gruenfeld gambit accepted
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 e2e3 e8g8 c4d5 f6d5 c3d5 d8d5 f4c7 
 ¯ exchange variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 
 ¯ modern exchange variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 g1f3 
 ¯ exchange, classical variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 
 ¯ exchange, Larsen variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 d8d7 e1g1 b7b6 
 ¯ exchange, Simagin's lesser variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 b7b6 
 ¯ exchange, Simagin's improved variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 b8c6 
 ¯ exchange, Spassky variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 
 ¯ exchange, Seville variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 e1g1 b8c6 c1e3 c8g4 f2f3 c6a5 c4f7 
 ¯ Spassky variation, main line, 10...cd, 11.cd
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 e1g1 b8c6 c1e3 c5d4 c3d4 
 ¯ Spassky variation, main line, 13.Bd3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 e1g1 b8c6 c1e3 c5d4 c3d4 c8g4 f2f3 c6a5 c4d3 g4e6 
 ¯ exchange, Sokolsky variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c4d5 f6d5 e2e4 d5c3 b2c3 f8g7 f1c4 e8g8 g1e2 c7c5 e1g1 b8c6 c1e3 c5d4 c3d4 c8g4 f2f3 c6a5 c4d3 g4e6 d4d5 
 ¯ Three knights variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 
 ¯ Schlechter variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 c7c6 
 ¯ Three knights variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 
 ¯ Flohr variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1a4 
 ¯ 5.Bg5
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1g5 
 ¯ 5.Bf4
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1f4 
D93 Gruenfeld with Bf4    e3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 c1f4 e8g8 e2e3 
 ¯ 5.e3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 
 ¯ Makogonov variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 b2b4 
 ¯ Opovcensky variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 c1d2 
D94 Gruenfeld with e3    Bd3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 f1d3 
 ¯ Smyslov defence
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 f1d3 c7c6 e1g1 c8g4 
 ¯ Flohr defence
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 f1d3 c7c6 e1g1 c8f5 
D95 Gruenfeld with e3 & Qb3
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 d1b3 
 ¯ Botvinnik variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 d1b3 e7e6 
 ¯ Pachman variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 e2e3 e8g8 d1b3 d5c4 f1c4 b8d7 f3g5 
 ¯ Russian variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 
 ¯ Russian variation with e4
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 
 ¯ Russian, Alekhine (Hungarian) variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 a7a6 
 ¯ Russian, Szabo (Boleslavsky) variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c7c6 
 ¯ Russian, Levenfish variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b7b6 
 ¯ Russian, Byrne (Simagin) variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b8c6 
 ¯ Russian, Prins variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 b8a6 
 ¯ Russian, Smyslov variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 
 ¯ Russian, Keres variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 f1e2 d7b6 c4d3 b8c6 e1c1 
 ¯ Smyslov, main line
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 c4b3 
 ¯ Smyslov, Yugoslav variation
d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 g1f3 f8g7 d1b3 d5c4 b3c4 e8g8 e2e4 c8g4 c1e3 f6d7 c4b3 c7c5 
E00 Queen's pawn game
d2d4 g8f6 c2c4 e7e6 
E00 Neo-Indian (Seirawan) attack
d2d4 g8f6 c2c4 e7e6 c1g5 
E00 Catalan opening
d2d4 g8f6 c2c4 e7e6 g2g3 
 ¯ closed
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 
 ¯ open, 5.Qa4
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 d1a4 
 ¯ open, Alekhine variation
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 d1a4 b8d7 a4c4 a7a6 c4c2 
 ¯ open, 5.Qa4 Nbd7, 6.Qxc4
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 d1a4 b8d7 a4c4 
 ¯ open, 5.Nf3
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 g1f3 
 ¯ open, classical line
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 d5c4 g1f3 f8e7 
 ¯ closed, 5.Nf3
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 
 ¯ closed, 6...Nbd7
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 
 ¯ closed, Botvinnik variation
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 b1c3 c7c6 d1d3 
 ¯ closed, 7.Qc2
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 
 ¯ closed, Zagoryansky variation
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 f1d1 b7b6 a2a4 
 ¯ closed, Qc2 & b3
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b2b3 
 ¯ closed, Spassky gambit
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b2b3 b7b6 f1d1 c8b7 b1c3 b6b5 
 ¯ closed, main line
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b1d2 
 ¯ closed, Sokolsky variation
d2d4 g8f6 c2c4 e7e6 g2g3 d7d5 f1g2 f8e7 g1f3 e8g8 e1g1 b8d7 d1c2 c7c6 b1d2 b7b6 b2b3 a7a5 c1b2 c8a6 
E10 Queen's pawn game
d2d4 g8f6 c2c4 e7e6 g1f3 
E10 Blumenfeld counter-gambit
d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 
E10 Blumenfeld counter-gambit accepted
d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 d5e6 f7e6 c4b5 d7d5 
E10 Blumenfeld counter-gambit, Dus-Chotimursky variation
d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 c1g5 
E10 Blumenfeld counter-gambit, Spielmann variation
d2d4 g8f6 c2c4 e7e6 g1f3 c7c5 d4d5 b7b5 c1g5 e6d5 c4d5 h7h6 
E10 Dzindzikhashvili defence
d2d4 g8f6 c2c4 e7e6 g1f3 a7a6 
E10 Doery defence
d2d4 g8f6 c2c4 e7e6 g1f3 f6e4 
E11 Bogo-Indian defence
d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 
E11 Bogo-Indian defence, Gruenfeld variation
d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 b1d2 
E11 Bogo-Indian defence, Nimzovich variation
d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 d8e7 
E11 Bogo-Indian defence, Monticelli trap
d2d4 g8f6 c2c4 e7e6 g1f3 f8b4 c1d2 b4d2 d1d2 b7b6 g2g3 c8b7 f1g2 e8g8 b1c3 f6e4 d2c2 e4c3 f3g5 
E12 Queen's Indian defence
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 
 ¯ Miles variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 c1f4 
 ¯ Petrosian system
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 a2a3 
 ¯ 4.Nc3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 
 ¯ 4.Nc3, Botvinnik variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 c8b7 c1g5 h7h6 g5h4 g7g5 h4g3 f6h5 
 ¯ 4.Nc3, main line
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 b1c3 c8b7 c1g5 h7h6 g5h4 f8b4 
 ¯ 4.e3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 e2e3 
 ¯ Averbakh variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 e2e3 c8b7 f1d3 c7c5 e1g1 f8e7 b2b3 e8g8 c1b2 c5d4 f3d4 
 ¯ 4.g3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 
 ¯ Nimzovich variation (exaggerated fianchetto)
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8a6 
 ¯ 4.g3 Bb7
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 
 ¯ Rubinstein variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 d4d5 e6d5 f3h4 
 ¯ Buerger variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 c7c5 d4d5 e6d5 f3g5 
 ¯ Capablanca variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4 
 ¯ Yates variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4 c1d2 a7a5 
 ¯ Riumin variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8b4 c1d2 b4e7 
 ¯ 5.Bg2 Be7
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 
 ¯ anti-Queen's Indian system
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 b1c3 
 ¯ Opovcensky variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 b1c3 f6e4 c1d2 
 ¯ old main line, 6.O-O
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 
 ¯ Euwe variation
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b2b3 
 ¯ old main line, 7.Nc3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b1c3 
 ¯ old main line, 9.Qxc3
d2d4 g8f6 c2c4 e7e6 g1f3 b7b6 g2g3 c8b7 f1g2 f8e7 e1g1 e8g8 b1c3 f6e4 d1c2 e4c3 c2c3 
E20 Nimzo-Indian defence
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 
 ¯ Kmoch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 f2f3 
 ¯ Mikenas attack
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1d3 
 ¯ Romanishin-Kasparov (Steiner) system
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g2g3 
 ¯ three knights variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 
 ¯ three knights, Korchnoi variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 c7c5 d4d5 
 ¯ three knights, Euwe variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 g1f3 c7c5 d4d5 f6e4 
 ¯ Spielmann variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 
 ¯ Spielmann, 4...c5, 5.dc Nc6
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 
 ¯ Spielmann, Karlsbad variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4d2 
 ¯ Spielmann, San Remo variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4c5 
 ¯ Spielmann, Staahlberg variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1b3 c7c5 d4c5 b8c6 g1f3 f6e4 c1d2 e4c5 b3c2 f7f5 g2g3 
 ¯ Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 
 ¯ Saemisch, Botvinnik variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 f2f3 d7d5 e2e3 e8g8 c4d5 f6d5 
 ¯ Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 f2f3 d7d5 c4d5 
 ¯ Saemisch, Keres variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 f2f3 d7d5 c4d5 f6d5 d4c5 
 ¯ Saemisch, Romanovsky variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 f2f3 d7d5 c4d5 f6d5 d4c5 f7f5 
 ¯ Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 e2e3 
 ¯ Saemisch, O'Kelly variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 c7c5 e2e3 b7b6 
 ¯ Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8 
 ¯ Saemisch variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8 e2e3 
 ¯ Saemisch, main line
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8 e2e3 c7c5 f1d3 b8c6 
 ¯ Saemisch, Capablanca variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 a2a3 b4c3 b2c3 e8g8 e2e3 c7c5 f1d3 b8c6 g1e2 b7b6 e3e4 f6e8 
 ¯ Leningrad variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5 
 ¯ Leningrad, ...b5 gambit
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5 h7h6 g5h4 c7c5 d4d5 b7b5 
 ¯ Leningrad, main line
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 c1g5 h7h6 g5h4 c7c5 d4d5 d7d6 
 ¯ classical variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 
 ¯ classical, Adorjan gambit
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 e8g8 a2a3 b4c3 c2c3 b7b5 
 ¯ classical, 4...Nc6
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 b8c6 
 ¯ classical, Milner-Barry (Zurich) variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 b8c6 g1f3 d7d6 
 ¯ classical, Noa variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 
 ¯ classical, Noa variation, 5.cd ed
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 c4d5 e6d5 
 ¯ classical, Noa variation, 5.a3
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 
 ¯ classical, Botvinnik variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 b8c6 
 ¯ classical, Noa variation, main line
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4 
 ¯ classical, Noa variation, main line, 7.Qc2
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4 c3c2 
 ¯ classical, San Remo variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 d7d5 a2a3 b4c3 c2c3 f6e4 c3c2 b8c6 e2e3 e6e5 
 ¯ classical, 4...c5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 c7c5 
 ¯ classical, Pirc variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 d1c2 c7c5 d4c5 e8g8 
 ¯ 4.e3
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 
 ¯ 4.e3, Taimanov variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b8c6 
 ¯ 4.e3 c5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 
 ¯ e3, Huebner variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 f1d3 b8c6 g1f3 b4c3 b2c3 d7d6 
 ¯ 4.e3 c5, 5.Ne2 (Rubinstein)
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 c7c5 g1e2 
 ¯ Fischer variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 
 ¯ Fischer variation, 5.Ne2
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 g1e2 
 ¯ 4.e3, Bronstein (Byrne) variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 b7b6 g1e2 c8a6 
 ¯ 4.e3 O-O
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 
 ¯ Reshevsky variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1e2 
 ¯ Simagin variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1e2 d7d5 a2a3 b4d6 
 ¯ 4.e3 O-O, 5.Bd3
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 
 ¯ 4.e3 O-O, 5.Bd3 d5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 
 ¯ 4.e3, Botvinnik system
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 f1d3 d7d5 a2a3 b4c3 b2c3 
 ¯ 4.e3 e8g8, 5.Nf3, without ...d5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 
 ¯ 4.e3 e8g8, 5.Nf3 d7d5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 
 ¯ 4.e3, Ragozin variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 b8c6 e1g1 d5c4 
 ¯ 4.e3, main line with ...b6
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 b7b6 
 ¯ 4.e3, main line with ...c5
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 
 ¯ 4.e3, Keres variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b7b6 
 ¯ 4.e3, Gligoric system with 7...Nbd7
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8d7 
 ¯ 4.e3, Gligoric system with 7...dc
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 d5c4 d3c4 
 ¯ 4.e3, Gligoric system, Smyslov variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 d5c4 d3c4 d8e7 
 ¯ 4.e3, Gligoric system, Bronstein variation
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 d5c4 d3c4 b8d7 
 ¯ 4.e3, main line with 7...Nc6
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8c6 
 ¯ 4.e3, main line with 8...dc and 9...cd
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8c6 a2a3 d5c4 d3c4 c5d4 
 ¯ 4.e3, main line with 8...Bxc3
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8c6 a2a3 b4c3 b2c3 
 ¯ 4.e3, main line
d2d4 g8f6 c2c4 e7e6 b1c3 f8b4 e2e3 e8g8 g1f3 d7d5 f1d3 c7c5 e1g1 b8c6 a2a3 b4c3 b2c3 d5c4 d3c4 
E60 King's Indian defence
d2d4 g8f6 c2c4 g7g6 
E60 King's Indian, 3.Nf3
d2d4 g8f6 c2c4 g7g6 g1f3 
 ¯ Mengarini attack
d2d4 g8f6 c2c4 g7g6 d1c2 
 ¯ Anti-Gruenfeld
d2d4 g8f6 c2c4 g7g6 d4d5 
 ¯ Danube gambit
d2d4 g8f6 c2c4 g7g6 d4d5 b7b5 
 ¯ 3.g3
d2d4 g8f6 c2c4 g7g6 g2g3 
 ¯ 3.g3, counterthrust variation
d2d4 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 d7d5 
E61 King's Indian defence, 3.Nc3
d2d4 g8f6 c2c4 g7g6 b1c3 
 ¯ Smyslov system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 c1g5 
 ¯ fianchetto variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 
 ¯ fianchetto, Larsen system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c6 e1g1 c8f5 
 ¯ fianchetto, Kavalek (Bronstein) variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c6 e1g1 d8a5 
 ¯ fianchetto with ...Nc6
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 
 ¯ fianchetto, Uhlmann (Szabo) variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 e7e5 
 ¯ fianchetto, lesser Simagin (Spassky) variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 c8f5 
 ¯ fianchetto, Simagin variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 c8g4 
 ¯ fianchetto, Panno variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8c6 e1g1 a7a6 
 ¯ fianchetto, Yugoslav system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c5 
 ¯ fianchetto, Yugoslav, 7.O-O
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c5 e1g1 
 ¯ fianchetto, Yugoslav Panno
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 c7c5 e1g1 b8c6 d4d5 
 ¯ fianchetto with ...Nd7
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 
 ¯ fianchetto, classical variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 e1g1 e7e5 
 ¯ fianchetto, classical variation, 8.e4
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 e1g1 e7e5 e2e4 
 ¯ fianchetto, classical main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 g1f3 d7d6 g2g3 e8g8 f1g2 b8d7 e1g1 e7e5 e2e4 c7c6 h2h3 
 ¯ 4.e4
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 
 ¯ Kramer system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1e2 
 ¯ accelerated Averbakh system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 c1g5 
 ¯ Makagonov system (5.h3)
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 h2h3 
E72 King's Indian with e4 & g3
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g2g3 
 ¯ Pomar system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g2g3 e8g8 f1g2 e7e5 g1e2 
 ¯ 5.Be2
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 
 ¯ Semi-Averbakh system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1e3 
 ¯ Averbakh system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 
 ¯ Averbakh, 6...c5
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 c7c5 
 ¯ Averbakh, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f1e2 e8g8 c1g5 c7c5 d4d5 e7e6 
 ¯ Four pawns attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 
 ¯ Four pawns attack, dynamic line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 g1f3 c7c5 d4d5 
 ¯ Four pawns attack, 6.Be2
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 
 ¯ Six pawns attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 d4d5 e7e6 d5e6 f7e6 g2g4 b8c6 h2h4 
 ¯ Four pawns attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 d4d5 e7e6 g1f3 
 ¯ Four pawns attack, Florentine gambit
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 d4d5 e7e6 g1f3 e6d5 e4e5 
 ¯ Four pawns attack, with Be2 and Nf3
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 g1f3 
 ¯ Four pawns attack, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f4 e8g8 f1e2 c7c5 g1f3 c5d4 f3d4 b8c6 c1e3 
 ¯ Saemisch variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 
 ¯ Saemisch, 5...O-O
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 
 ¯ Saemisch, Byrne variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 c7c6 f1d3 a7a6 
 ¯ Saemisch, double fianchetto variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b7b6 
 ¯ Saemisch, 6...Nc6
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 
 ¯ Saemisch, Ruban variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a8b8 
 ¯ Saemisch, Panno formation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a7a6 
 ¯ Saemisch, Panno main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 b8c6 g1e2 a7a6 d1d2 a8b8 
 ¯ Saemisch, orthodox variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 
 ¯ Saemisch, orthodox, 7.Nge2 c6
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 g1e2 c7c6 
 ¯ Saemisch, orthodox, 7.d5
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 
 ¯ Saemisch, orthodox, Bronstein variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 f6h5 d1d2 d8h4 g2g3 h5g3 d2f2 g3f1 f2h4 f1e3 e1e2 e3c4 
 ¯ Saemisch, orthodox, 7.d5 c6
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 c7c6 
 ¯ Saemisch, orthodox main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 f2f3 e8g8 c1e3 e7e5 d4d5 c7c6 g1e2 c6d5 
 ¯ 5.Nf3
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 
 ¯ Larsen variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 c1e3 
 ¯ Zinnowitz variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 c1g5 
 ¯ 6.Be2
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 
 ¯ Kazakh variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 b8a6 
 ¯ classical variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 
 ¯ Andersson variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4e5 
 ¯ Gligoric-Taimanov system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 c1e3 
 ¯ Petrosian system
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 
 ¯ Petrosian system, Stein variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 a7a5 
 ¯ Petrosian system, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 b8d7 
 ¯ Petrosian system, Keres variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 d4d5 b8d7 c1g5 h7h6 g5h4 g6g5 h4g3 f6h5 h2h4 
 ¯ orthodox variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 
 ¯ orthodox, Donner variation
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 c7c6 
 ¯ orthodox, 7...Nbd7
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8d7 
 ¯ orthodox, 7...Nbd7, 8.Re1
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8d7 f1e1 
 ¯ orthodox, 7...Nbd7, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8d7 f1e1 c7c6 e2f1 a7a5 
 ¯ orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 
 ¯ orthodox, Aronin-Taimanov, bayonet attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 b2b4 
 ¯ orthodox, Aronin-Taimanov, 9.Ne1
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 
 ¯ orthodox, Aronin-Taimanov, main line
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 f6d7 f2f3 f7f5 
 ¯ orthodox, Aronin-Taimanov, Benko attack
d2d4 g8f6 c2c4 g7g6 b1c3 f8g7 e2e4 d7d6 g1f3 e8g8 f1e2 e7e5 e1g1 b8c6 d4d5 c6e7 f3e1 f6d7 f2f3 f7f5 g2g4 
