eco name pgn
A00 Amar Opening 1. Nh3
A00 Amar Opening: Paris Gambit 1. Nh3 d5 2. g3 e5 3. f4
A00 Amar Opening: Paris Gambit, Gent Gambit 1. Nh3 d5 2. g3 e5 3. f4 Bxh3 4. Bxh3 exf4 5. O-O fxg3 6. hxg3
A00 Amsterdam Attack 1. e3 e5 2. c4 d6 3. Nc3 Nc6 4. b3 Nf6
A00 Anderssen's Opening 1. a3
A00 Anderssen's Opening: Polish Gambit 1. a3 a5 2. b4
A00 Barnes Opening 1. f3
A00 Barnes Opening: Fool's Mate 1. f3 e5 2. g4 Qh4#
A00 Barnes Opening: Gedult Gambit 1. f3 d5 2. e4 g6 3. d4 dxe4 4. c3
A00 Barnes Opening: Gedult Gambit 1. f3 f5 2. e4 fxe4 3. Nc3
A00 Barnes Opening: Hammerschlag 1. f3 e5 2. Kf2
A00 Clemenz Opening 1. h3
A00 Clemenz Opening: Spike Lee Gambit 1. h3 h5 2. g4
A00 Creepy Crawly Formation: Classical Defense 1. h3 d5 2. a3 e5
A00 Formation: Hippopotamus Attack 1. a3 e5 2. b3 d5 3. c3 Nf6 4. d3 Nc6 5. e3 Bd6 6. f3 O-O 7. g3
A00 Formation: Shy Attack 1. a3 e5 2. g3 d5 3. Bg2 Nf6 4. d3 Nc6 5. Nd2 Bd6 6. e3 O-O 7. h3
A00 Global Opening 1. h3 e5 2. a3
A00 Grob Opening 1. g4
A00 Grob Opening: Alessi Gambit 1. g4 f5
A00 Grob Opening: Double Grob 1. g4 g5
A00 Grob Opening: Double Grob, Coca-Cola Gambit 1. g4 g5 2. f4
A00 Grob Opening: Grob Gambit 1. g4 d5 2. Bg2
A00 Grob Opening: Grob Gambit Declined 1. g4 d5 2. Bg2 c6
A00 Grob Opening: Grob Gambit, Basman Gambit 1. g4 d5 2. Bg2 h5 3. gxh5
A00 Grob Opening: Grob Gambit, Fritz Gambit 1. g4 d5 2. Bg2 Bxg4 3. c4
A00 Grob Opening: Grob Gambit, Fritz Gambit, Romford Countergambit 1. g4 d5 2. Bg2 Bxg4 3. c4 d4 4. Bxb7 Nd7 5. Bxa8 Qxa8
A00 Grob Opening: Grob Gambit, Keres Gambit 1. g4 d5 2. Bg2 e5 3. d4 exd4 4. c3
A00 Grob Opening: Grob Gambit, Richter-Grob Gambit 1. g4 d5 2. Bg2 c6 3. c4 dxc4 4. b3
A00 Grob Opening: Keene Defense 1. g4 d5 2. h3 e5 3. Bg2 c6
A00 Grob Opening: Keene Defense, Main Line 1. g4 d5 2. h3 e5 3. Bg2 c6 4. d4 e4 5. c4 Bd6 6. Nc3 Ne7
A00 Grob Opening: London Defense 1. g4 e5 2. h3 Nc6
A00 Grob Opening: Romford Countergambit 1. g4 d5 2. Bg2 Bxg4 3. c4 d4
A00 Grob Opening: Spike Attack 1. g4 d5 2. Bg2 c6 3. g5
A00 Grob Opening: Spike, Hurst Attack 1. g4 e5 2. Bg2 d5 3. c4
A00 Grob Opening: Zilbermints Gambit 1. g4 d5 2. e4 dxe4 3. Nc3
A00 Grob Opening: Zilbermints Gambit, Schiller Defense 1. g4 d5 2. e4 dxe4 3. Nc3 h5
A00 Grob Opening: Zilbermints Gambit, Zilbermints-Hartlaub Gambit 1. g4 d5 2. e4 dxe4 3. Nc3 e5 4. d3
A00 Hungarian Opening 1. g3
A00 Hungarian Opening: Asten Gambit 1. g3 Nc6 2. Nc3 d5 3. d4 e5 4. dxe5 d4 5. Ne4 f5
A00 Hungarian Opening: Burk Gambit 1. g3 e5 2. a3 d5 3. Nf3 e4 4. Nh4 Be7 5. d3
A00 Hungarian Opening: Bücker Gambit 1. g3 d5 2. Bg2 e5 3. b4
A00 Hungarian Opening: Catalan Formation 1. g3 d5 2. Bg2 e6
A00 Hungarian Opening: Dutch Defense 1. g3 f5
A00 Hungarian Opening: Indian Defense 1. g3 Nf6
A00 Hungarian Opening: Myers Defense 1. g3 g5
A00 Hungarian Opening: Pachman Gambit 1. g3 f5 2. e4 fxe4 3. Qh5+ g6
A00 Hungarian Opening: Paris Gambit 1. g3 e5 2. Nh3 d5 3. f4 Bxh3 4. Bxh3 exf4 5. O-O
A00 Hungarian Opening: Reversed Alekhine 1. g3 e5 2. Nf3
A00 Hungarian Opening: Reversed Brooklyn Defense, Brooklyn Benko Gambit 1. g3 e5 2. Nf3 e4 3. Ng1 Nf6 4. b4
A00 Hungarian Opening: Reversed Modern Defense 1. g3 d5 2. Bg2 c5
A00 Hungarian Opening: Reversed Norwegian Defense 1. g3 e5 2. Nf3 e4 3. Nh4
A00 Hungarian Opening: Sicilian Invitation 1. g3 c5
A00 Hungarian Opening: Slav Formation 1. g3 d5 2. Bg2 c6
A00 Hungarian Opening: Symmetrical Variation 1. g3 g6
A00 Hungarian Opening: Van Kuijk Gambit 1. g3 h5 2. Nf3 h4
A00 Hungarian Opening: Winterberg Gambit 1. g3 d5 2. Bg2 e5 3. c4 dxc4 4. b3
A00 Kádas Opening 1. h4
A00 Kádas Opening: Beginner's Trap 1. h4 d5 2. Rh3
A00 Kádas Opening: Koola-Koola Variation 1. h4 a5
A00 Kádas Opening: Kádas Gambit 1. h4 c5 2. b4
A00 Kádas Opening: Kádas Gambit 1. h4 d5 2. d4 c5 3. Nf3 cxd4 4. c3
A00 Kádas Opening: Kádas Gambit 1. h4 e5 2. d4 exd4 3. c3
A00 Kádas Opening: Myers Variation 1. h4 d5 2. d4 c5 3. e4
A00 Kádas Opening: Schneider Gambit 1. h4 g5
A00 Kádas Opening: Steinbok Gambit 1. h4 f5 2. e4 fxe4 3. d3
A00 Lasker Simul Special 1. g3 h5
A00 Mieses Opening 1. d3
A00 Mieses Opening: Myers Spike Attack 1. d3 g6 2. g4
A00 Mieses Opening: Reversed Rat 1. d3 e5
A00 Mieses Opening: Venezolana Variation 1. d3 c5 2. Nc3 Nc6 3. g3
A00 Polish Opening 1. b4
A00 Polish Opening: Baltic Defense 1. b4 d5 2. Bb2 Bf5
A00 Polish Opening: Birmingham Gambit 1. b4 c5
A00 Polish Opening: Bugayev Advance Variation 1. b4 e5 2. Bb2 f6 3. b5
A00 Polish Opening: Bugayev Attack 1. b4 e5 2. a3
A00 Polish Opening: Czech Defense 1. b4 e5 2. Bb2 d6
A00 Polish Opening: Dutch Defense 1. b4 f5
A00 Polish Opening: German Defense 1. b4 d5 2. Bb2 Qd6
A00 Polish Opening: Grigorian Variation 1. b4 Nc6
A00 Polish Opening: Karniewski Variation 1. b4 Nh6
A00 Polish Opening: King's Indian Variation 1. b4 Nf6 2. Bb2 g6
A00 Polish Opening: King's Indian Variation, Schiffler Attack 1. b4 Nf6 2. Bb2 g6 3. e4
A00 Polish Opening: King's Indian Variation, Sokolsky Attack 1. b4 Nf6 2. Bb2 g6 3. c4 Bg7 4. e3 d6 5. Nf3 O-O 6. d4
A00 Polish Opening: Myers Variation 1. b4 d5 2. Bb2 c6 3. a4
A00 Polish Opening: Outflank Variation 1. b4 c6
A00 Polish Opening: Queen's Indian Variation 1. b4 e6 2. Bb2 Nf6 3. b5 b6
A00 Polish Opening: Queenside Defense 1. b4 e6 2. Bb2 Nf6 3. b5 a6
A00 Polish Opening: Rooks Swap Line 1. b4 e6 2. Bb2 Nf6 3. b5 a6 4. a4 axb5 5. axb5 Rxa1 6. Bxa1
A00 Polish Opening: Schiffler-Sokolsky Variation 1. b4 e6 2. Bb2 Nf6 3. b5 d5 4. e3
A00 Polish Opening: Schuehler Gambit 1. b4 c6 2. Bb2 a5 3. b5 cxb5 4. e4
A00 Polish Opening: Symmetrical Variation 1. b4 b5
A00 Polish Opening: Tartakower Gambit 1. b4 e5 2. Bb2 f6 3. e4
A00 Polish Opening: Wolferts Gambit 1. b4 e5 2. Bb2 c5
A00 Saragossa Opening 1. c3
A00 Sodium Attack 1. Na3
A00 Sodium Attack: Celadon Variation 1. Na3 e5 2. d3 Bxa3 3. bxa3 d5 4. e3 c5 5. Rb1
A00 Sodium Attack: Chenoboskion Variation 1. Na3 g6 2. g4
A00 Sodium Attack: Durkin Gambit 1. Na3 e5 2. Nc4 Nc6 3. e4 f5
A00 Valencia Opening 1. d3 e5 2. Nd2
A00 Van Geet Opening 1. Nc3
A00 Van Geet Opening: Battambang Variation 1. a3 e5 2. Nc3
A00 Van Geet Opening: Billockus-Johansen Gambit 1. Nc3 e5 2. Nf3 Bc5
A00 Van Geet Opening: Damhaug Gambit 1. Nc3 d5 2. f4 e5
A00 Van Geet Opening: Dougherty Gambit 1. Nc3 d5 2. e4 dxe4 3. f3
A00 Van Geet Opening: Dunst-Perrenet Gambit 1. Nc3 d5 2. e4 dxe4 3. d3
A00 Van Geet Opening: Düsseldorf Gambit 1. Nc3 c5 2. b4
A00 Van Geet Opening: Gladbacher Gambit 1. Nc3 e5 2. b3 d5 3. e4 dxe4 4. d3
A00 Van Geet Opening: Hector Gambit 1. Nc3 d5 2. e4 dxe4 3. Bc4
A00 Van Geet Opening: Hergert Gambit 1. Nc3 d6 2. f4 e5 3. fxe5 Nc6
A00 Van Geet Opening: Hulsemann Gambit 1. Nc3 e5 2. e3 d5 3. Qh5 Be6
A00 Van Geet Opening: Jendrossek Gambit 1. Nc3 d5 2. f4 d4 3. Ne4 f5 4. Nf2 Nf6 5. Nf3 c5 6. b4
A00 Van Geet Opening: Kluever Gambit 1. Nc3 f5 2. e4 fxe4 3. d3
A00 Van Geet Opening: Laroche Gambit 1. Nc3 b5
A00 Van Geet Opening: Liebig Gambit 1. Nc3 e5 2. e3 d5 3. Qh5 Nf6
A00 Van Geet Opening: Melleby Gambit 1. Nc3 d5 2. f4 d4 3. Ne4 c5
A00 Van Geet Opening: Myers Attack 1. Nc3 g6 2. h4
A00 Van Geet Opening: Napoleon Attack 1. Nc3 e5 2. Nf3 Nc6 3. d4
A00 Van Geet Opening: Novosibirsk Variation 1. Nc3 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qh4
A00 Van Geet Opening: Nowokunski Gambit 1. Nc3 e5 2. f4 exf4 3. e4
A00 Van Geet Opening: Pfeiffer Gambit 1. Nc3 d5 2. f4 d4 3. Ne4 e5
A00 Van Geet Opening: Pfeiffer Gambit, Sleipnir Countergambit 1. Nc3 d5 2. f4 d4 3. Ne4 e5 4. Nf3
A00 Van Geet Opening: Reversed Nimzowitsch 1. Nc3 e5
A00 Van Geet Opening: Reversed Scandinavian 1. Nc3 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qa4
A00 Van Geet Opening: Sicilian Two Knights 1. Nc3 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4
A00 Van Geet Opening: Sleipnir Gambit 1. Nc3 d5 2. e3 e5 3. d4 Bb4
A00 Van Geet Opening: Twyble Attack 1. Nc3 c5 2. Rb1
A00 Van Geet Opening: Tübingen Gambit 1. Nc3 Nf6 2. g4
A00 Van Geet Opening: Venezolana Variation 1. Nc3 d5 2. d3 Nf6 3. g3
A00 Van Geet Opening: Warsteiner Gambit 1. Nc3 d5 2. f4 g5
A00 Van't Kruijs Opening 1. e3
A00 Van't Kruijs Opening: Bouncing Bishop Variation 1. e3 e5 2. Bc4 b5 3. Bb3
A00 Van't Kruijs Opening: Keoni-Hiva Gambit, Akahi Variation 1. e3 e5 2. Nc3 Nf6 3. f4 exf4 4. Nf3
A00 Van't Kruijs Opening: Keoni-Hiva Gambit, Alua Variation 1. e3 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3
A00 Van't Kruijs Opening: Keoni-Hiva Gambit, Ekolu Variation 1. e3 e5 2. Nc3 d5 3. f4 exf4 4. Nf3
A00 Ware Opening 1. a4
A00 Ware Opening: Cologne Gambit 1. a4 b6 2. d4 d5 3. Nc3 Nd7
A00 Ware Opening: Crab Variation 1. a4 e5 2. h4
A00 Ware Opening: Meadow Hay Trap 1. a4 e5 2. Ra3
A00 Ware Opening: Symmetric Variation 1. a4 a5
A00 Ware Opening: Ware Gambit 1. a4 e5 2. a5 d5 3. e3 f5 4. a6
A00 Ware Opening: Wing Gambit 1. a4 b5 2. axb5 Bb7
A01 Nimzo-Larsen Attack 1. b3
A01 Nimzo-Larsen Attack: Classical Variation 1. b3 d5
A01 Nimzo-Larsen Attack: Dutch Variation 1. b3 f5
A01 Nimzo-Larsen Attack: English Variation 1. b3 c5
A01 Nimzo-Larsen Attack: Graz Attack 1. b3 d5 2. Ba3
A01 Nimzo-Larsen Attack: Indian Variation 1. b3 Nf6
A01 Nimzo-Larsen Attack: Modern Variation 1. b3 e5
A01 Nimzo-Larsen Attack: Modern Variation 1. b3 e5 2. Bb2 Nc6
A01 Nimzo-Larsen Attack: Modern Variation 1. b3 e5 2. Bb2 Nc6 3. e3
A01 Nimzo-Larsen Attack: Modern Variation 1. b3 e5 2. Bb2 Nc6 3. c4 Nf6
A01 Nimzo-Larsen Attack: Pachman Gambit 1. b3 e5 2. Bb2 Nc6 3. f4
A01 Nimzo-Larsen Attack: Polish Variation 1. b3 b5
A01 Nimzo-Larsen Attack: Ringelbach Gambit 1. b3 f5 2. Bb2 e6 3. e4
A01 Nimzo-Larsen Attack: Spike Variation 1. b3 Nf6 2. Bb2 g6 3. g4
A01 Nimzo-Larsen Attack: Symmetrical Variation 1. b3 b6
A02 Bird Opening 1. f4
A02 Bird Opening: Batavo-Polish Attack 1. f4 Nf6 2. Nf3 g6 3. b4
A02 Bird Opening: Double Duck Formation 1. f4 f5 2. d4 d5
A02 Bird Opening: From's Gambit 1. f4 e5
A02 Bird Opening: From's Gambit, Bahr Gambit 1. f4 e5 2. Nc3
A02 Bird Opening: From's Gambit, Langheld Gambit 1. f4 e5 2. fxe5 d6 3. exd6 Nf6
A02 Bird Opening: From's Gambit, Lasker Variation 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5
A02 Bird Opening: From's Gambit, Lipke Variation 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 Nh6 5. d4
A02 Bird Opening: Hobbs Gambit 1. f4 g5
A02 Bird Opening: Hobbs-Zilbermints Gambit 1. f4 h6 2. Nf3 g5
A02 Bird Opening: Horsefly Defense 1. f4 Nh6
A02 Bird Opening: Lasker Gambit 1. f4 e5 2. fxe5 f6
A02 Bird Opening: Mujannah 1. f4 Nf6 2. c4
A02 Bird Opening: Myers Defense 1. f4 b5
A02 Bird Opening: Platz Gambit 1. f4 e5 2. fxe5 Ne7
A02 Bird Opening: Schlechter Gambit 1. f4 e5 2. fxe5 Nc6
A02 Bird Opening: Siegener Gambit 1. f4 e5 2. d4 exd4 3. Nf3 c5 4. c3
A02 Bird Opening: Swiss Gambit 1. f4 f5 2. e4 fxe4 3. Nc3 Nf6 4. g4
A02 Bird Opening: Wagner-Zwitersch Gambit 1. f4 f5 2. e4
A03 Bird Opening: Dutch Variation 1. f4 d5
A03 Bird Opening: Dutch Variation, Dudweiler Gambit 1. f4 d5 2. g4
A03 Bird Opening: Lasker Variation 1. f4 d5 2. Nf3 Nf6 3. e3 c5
A03 Bird Opening: Sturm Gambit 1. f4 d5 2. c4
A03 Bird Opening: Thomas Gambit 1. f4 d5 2. b3 Nf6 3. Bb2 d4 4. Nf3 c5 5. e3
A03 Bird Opening: Williams Gambit 1. f4 d5 2. e4
A03 Bird Opening: Williams Gambit 1. f4 d5 2. e4 dxe4 3. Nc3 Nf6 4. Qe2
A03 Bird Opening: Williams-Zilbermints Gambit 1. f4 d5 2. e4 dxe4 3. Nc3 Nf6 4. Nge2
A04 Colle System: Rhamphorhynchus Variation 1. Nf3 c5 2. e3 g6 3. d4 Bg7 4. dxc5 Qa5+
A04 Modern Defense: Semi-Averbakh Variation, Polish Variation 1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. e4 Qb6
A04 Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation 1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. e4 Qa5+
A04 Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation Accepted 1. Nf3 g6 2. d4 Bg7 3. e4 d6 4. c4 c5 5. dxc5 Qa5+
A04 Zukertort Defense: Kingside Variation 1. Nf3 Nh6 2. d4 g6
A04 Zukertort Defense: Sicilian Knight Variation 1. Nf3 Na6 2. e4 c5
A04 Zukertort Opening 1. Nf3
A04 Zukertort Opening: Arctic Defense 1. Nf3 f6
A04 Zukertort Opening: Arctic Defense, Drunken Knight Variation 1. Nf3 f6 2. e4 Nh6 3. d4 Nf7
A04 Zukertort Opening: Basman Defense 1. Nf3 h6
A04 Zukertort Opening: Black Mustang Defense 1. Nf3 Nc6
A04 Zukertort Opening: Drunken Cavalry Variation 1. Nf3 Na6 2. e4 Nh6
A04 Zukertort Opening: Dutch Variation 1. Nf3 f5
A04 Zukertort Opening: Herrstrom Gambit 1. Nf3 g5
A04 Zukertort Opening: Kingside Fianchetto 1. Nf3 g6
A04 Zukertort Opening: Lisitsyn Gambit 1. Nf3 f5 2. e4
A04 Zukertort Opening: Lisitsyn Gambit Deferred 1. Nf3 f5 2. d3 Nf6 3. e4
A04 Zukertort Opening: Pirc Invitation 1. Nf3 d6
A04 Zukertort Opening: Polish Defense 1. Nf3 b5
A04 Zukertort Opening: Queen's Gambit Invitation 1. Nf3 e6
A04 Zukertort Opening: Queenside Fianchetto Variation 1. Nf3 b6
A04 Zukertort Opening: Ross Gambit 1. Nf3 e5
A04 Zukertort Opening: Shabalov Gambit 1. Nf3 e6 2. c4 a6 3. Nc3 c5 4. g3 b5
A04 Zukertort Opening: Sicilian Invitation 1. Nf3 c5
A04 Zukertort Opening: Slav Invitation 1. Nf3 c6
A04 Zukertort Opening: Speelsmet Gambit 1. Nf3 c5 2. d4 cxd4 3. e3
A04 Zukertort Opening: St. George Defense 1. Nf3 a6
A04 Zukertort Opening: The Walrus 1. Nf3 e5 2. Nxe5 Nc6 3. Nxc6 dxc6
A04 Zukertort Opening: Vos Gambit 1. Nf3 d6 2. d4 e5
A04 Zukertort Opening: Wade Defense 1. Nf3 d6 2. e4 Bg4
A04 Zukertort Opening: Ware Defense 1. Nf3 a5
A05 King's Indian Attack 1. Nf3 Nf6 2. g3 d5
A05 King's Indian Attack: Smyslov Variation 1. Nf3 Nf6 2. g3 g6 3. b4
A05 King's Indian Attack: Spassky Variation 1. Nf3 Nf6 2. g3 b5
A05 King's Indian Attack: Symmetrical Defense 1. Nf3 Nf6 2. g3 g6
A05 King's Indian Attack: Wahls Defense 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d3 d5
A05 Polish Opening: Zukertort System 1. Nf3 Nf6 2. b4
A05 Zukertort Opening 1. Nf3 Nf6
A05 Zukertort Opening 1. Nf3 Nf6 2. Nc3 Nc6
A05 Zukertort Opening: Double Fianchetto Attack 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. O-O
A05 Zukertort Opening: Lemberger Gambit 1. Nf3 Nf6 2. e4
A05 Zukertort Opening: Myers Polish Attack 1. Nf3 Nf6 2. a4 g6 3. b4
A05 Zukertort Opening: Nimzo-Larsen Variation 1. Nf3 Nf6 2. b3
A05 Zukertort Opening: Quiet System 1. Nf3 Nf6 2. e3
A06 Nimzo-Larsen Attack: Classical Variation 1. Nf3 d5 2. b3
A06 Nimzo-Larsen Attack: Norfolk Gambit 1. Nf3 d5 2. b3 c5 3. e4
A06 Nimzo-Larsen Attack: Norfolk Gambit 1. Nf3 d5 2. b3 Nf6 3. Bb2 c5 4. e4
A06 Zukertort Opening 1. Nf3 d5
A06 Zukertort Opening: Ampel Variation 1. Nf3 d5 2. Rg1
A06 Zukertort Opening: Old Indian Attack 1. Nf3 d5 2. d3
A06 Zukertort Opening: Pachman Gambit 1. Nf3 d5 2. e3 c5 3. c4 dxc4 4. b3
A06 Zukertort Opening: Regina-Nu Gambit 1. Nf3 d5 2. b3 c5 3. c4 dxc4 4. Nc3
A06 Zukertort Opening: Reversed Mexican Defense 1. Nf3 d5 2. Nc3
A06 Zukertort Opening: Santasiere's Folly 1. b4 d5 2. Nf3
A06 Zukertort Opening: Tennison Gambit 1. e4 d5 2. Nf3
A06 Zukertort Opening: Tennison Gambit, Brigg's Trap 1. e4 d5 2. Nf3 dxe4 3. Ng5 Nf6 4. Nc3 Bf5 5. Qe2 Qd4
A06 Zukertort Opening: The Potato 1. Nf3 d5 2. a4
A07 Hungarian Opening: Wiedenhagen-Beta Gambit 1. g3 d5 2. Nf3 g5
A07 King's Indian Attack 1. Nf3 d5 2. g3
A07 King's Indian Attack: Double Fianchetto 1. Nf3 d5 2. g3 g6
A07 King's Indian Attack: Keres Variation 1. Nf3 d5 2. g3 Bg4
A07 King's Indian Attack: Keres Variation 1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7
A07 King's Indian Attack: Omega-Delta Gambit 1. Nf3 d5 2. g3 e5
A07 King's Indian Attack: Pachman System 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7
A07 King's Indian Attack: Sicilian Variation 1. Nf3 d5 2. g3 c5
A07 King's Indian Attack: Yugoslav Variation 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bg4
A08 King's Indian Attack: French Variation 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6
A08 King's Indian Attack: Sicilian Variation 1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 c5 5. g3 Nc6 6. Bg2 Be7 7. O-O O-O 8. Re1
A08 King's Indian Attack: Sicilian Variation 1. Nf3 d5 2. g3 c5 3. Bg2
A08 King's Indian Attack: Sicilian Variation 1. Nf3 d5 2. g3 c5 3. Bg2 Nf6 4. O-O e6 5. d3
A08 Zukertort Opening: Reversed Grünfeld 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4
A08 Zukertort Opening: Reversed Grünfeld 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6
A08 Zukertort Opening: Reversed Grünfeld 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O
A08 Zukertort Opening: Reversed Grünfeld 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. O-O
A09 Réti Opening 1. Nf3 d5 2. c4
A09 Réti Opening: Advance Variation 1. Nf3 d5 2. c4 d4
A09 Réti Opening: Advance Variation, Michel Gambit 1. Nf3 d5 2. c4 d4 3. b4 c5
A09 Réti Opening: Penguin Variation 1. Nf3 d5 2. c4 d4 3. Rg1
A09 Réti Opening: Reversed Blumenfeld Gambit 1. Nf3 d5 2. c4 d4 3. e3 c5 4. b4
A09 Réti Opening: Réti Accepted 1. Nf3 d5 2. c4 dxc4
A09 Réti Opening: Réti Gambit, Keres Variation 1. Nf3 d5 2. c4 dxc4 3. e3 Be6
A09 Réti Opening: Zilbermints Gambit 1. Nf3 d5 2. c4 b5
A10 English Opening 1. c4
A10 English Opening: Achilles-Omega Gambit 1. c4 Nf6 2. e4
A10 English Opening: Adorjan Defense 1. c4 g6 2. e4 e5
A10 English Opening: Anglo-Dutch Defense 1. c4 f5
A10 English Opening: Anglo-Dutch Defense, Hickmann Gambit 1. c4 f5 2. e4
A10 English Opening: Anglo-Dutch Variation, Chabanon Gambit 1. c4 f5 2. Nf3 d6 3. e4
A10 English Opening: Anglo-Dutch Variation, Ferenc Gambit 1. c4 f5 2. Nc3 Nf6 3. e4
A10 English Opening: Anglo-Lithuanian Variation 1. c4 Nc6
A10 English Opening: Anglo-Scandinavian Defense 1. c4 d5
A10 English Opening: Anglo-Scandinavian Defense, Löhn Gambit 1. c4 d5 2. cxd5 e6
A10 English Opening: Anglo-Scandinavian Defense, Malvinas Variation 1. c4 d5 2. cxd5 Qxd5 3. Nc3 Qa5
A10 English Opening: Anglo-Scandinavian Defense, Schulz Gambit 1. c4 d5 2. cxd5 Nf6
A10 English Opening: Great Snake Variation 1. c4 g6
A10 English Opening: Jaenisch Gambit 1. c4 b5
A10 English Opening: King's English Variation, Botvinnik System, Prickly Pawn Pass System 1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. e4 d6 6. Nge2 e5 7. O-O c6 8. d3 a6
A10 English Opening: Myers Defense 1. c4 g5
A10 English Opening: Myers Gambit 1. c4 g5 2. d4 Bg7
A10 English Opening: Porcupine Variation 1. c4 f5 2. Nc3 Nf6 3. e4 fxe4 4. g4
A10 English Opening: Wade Gambit 1. c4 f5 2. g4
A10 English Opening: Zilbermints Gambit 1. c4 g5 2. d4 e5
A11 English Opening: Caro-Kann Defensive System 1. c4 c6
A12 Réti Opening: Anglo-Slav Variation, Bled Variation 1. Nf3 d5 2. b3 Nf6 3. Bb2 g6 4. c4 c6
A12 Réti Opening: Anglo-Slav Variation, Bogoljubow Variation 1. Nf3 d5 2. c4 c6 3. b3
A12 Réti Opening: Anglo-Slav Variation, Bogoljubow Variation 1. Nf3 d5 2. c4 c6 3. b3 Bg4
A12 Réti Opening: Anglo-Slav Variation, Bogoljubow Variation 1. Nf3 Nf6 2. c4 c6 3. b3 d5 4. Bb2
A12 Réti Opening: Anglo-Slav Variation, Capablanca Variation 1. c4 Nf6 2. Nf3 c6 3. b3 d5 4. Bb2 Bg4
A12 Réti Opening: Anglo-Slav Variation, London Defensive System 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5
A12 Réti Opening: Anglo-Slav Variation, New York System 1. Nf3 Nf6 2. c4 c6 3. b3 d5 4. Bb2 Bf5
A12 Réti Opening: Anglo-Slav Variation, Torre System 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bg4
A13 English Opening: Agincourt Defense 1. c4 e6
A13 English Opening: Agincourt Defense 1. c4 e6 2. Nf3
A13 English Opening: Agincourt Defense 1. c4 e6 2. Nf3 d5
A13 English Opening: Agincourt Defense, Bogoljubow Defense 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bd6
A13 English Opening: Agincourt Defense, Catalan Defense 1. c4 e6 2. Nf3 d5 3. g3 b6 4. Bg2 Bb7 5. O-O
A13 English Opening: Agincourt Defense, Catalan Defense 1. c4 e6 2. Nf3 d5 3. g3 c5
A13 English Opening: Agincourt Defense, Catalan Defense Accepted 1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 dxc4
A13 English Opening: Agincourt Defense, Catalan Defense, Semi-Slav Defense 1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 c6
A13 English Opening: Agincourt Defense, Kurajica Defense 1. c4 e6 2. Nf3 d5 3. g3 c6
A13 English Opening: Agincourt Defense, Tarrasch Defense 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 c5 5. b3 Nc6 6. O-O Be7
A13 English Opening: Agincourt Defense, Wimpy System 1. c4 e6 2. Nf3 Nf6 3. b3 d5 4. Bb2 c5 5. e3
A13 English Opening: Neo-Catalan 1. c4 e6 2. Nf3 d5 3. g3 Nf6
A13 English Opening: Neo-Catalan Declined 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7
A13 English Opening: Romanishin Gambit 1. c4 Nf6 2. Nf3 e6 3. g3 a6 4. Bg2 b5
A14 English Opening: Agincourt Defense, Keres Defense 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O c5 6. cxd5 Nxd5 7. Nc3 Nc6
A14 English Opening: Agincourt Defense, Neo-Catalan Declined 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O
A14 Réti Opening: Anglo-Slav Variation, Bogoljubow Variation, Stonewall Line 1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. b3 c6 7. Bb2
A15 English Opening: Anglo-Indian Defense 1. c4 Nf6
A15 English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld 1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 4. e4
A15 English Opening: Anglo-Indian Defense, Grünfeld Formation 1. c4 Nf6 2. Nf3 g6 3. g3 d5
A15 English Opening: Anglo-Indian Defense, King's Indian Formation 1. c4 Nf6 2. Nf3 g6
A15 English Opening: Anglo-Indian Defense, King's Indian Formation, Double Fianchetto 1. c4 Nf6 2. Nf3 g6 3. g3 b6 4. Bg2 Bb7
A15 English Opening: Anglo-Indian Defense, King's Knight Variation 1. c4 Nf6 2. Nf3
A15 English Opening: Anglo-Indian Defense, Old Indian Formation 1. c4 Nf6 2. Nf3 d6
A15 English Opening: Anglo-Indian Defense, Queen's Indian Formation 1. c4 Nf6 2. Nf3 b6
A15 English Opening: Anglo-Indian Defense, Queen's Indian Formation 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7
A15 English Opening: Anglo-Indian Defense, Romanishin Variation 1. c4 e6 2. Nf3 Nf6 3. g3 a6
A15 English Opening: Anglo-Indian Defense, Scandinavian Defense 1. c4 Nf6 2. Nf3 d5
A15 English Opening: Anglo-Indian Defense, Scandinavian Defense, Exchange Variation 1. c4 Nf6 2. Nf3 d5 3. cxd5 Nxd5
A15 English Opening: Anglo-Indian Defense, Slav Formation 1. c4 Nf6 2. Nf3 g6 3. g3 c6
A15 English Orangutan 1. c4 Nf6 2. b4
A16 English Opening: Anglo-Grünfeld Defense 1. c4 Nf6 2. Nc3 d5
A16 English Opening: Anglo-Grünfeld Defense, Korchnoi Variation 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 g6 5. g3 Bg7 6. Bg2 e5
A16 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3
A16 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 g6
A16 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nb6
A16 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nxc3
A16 English Opening: Anglo-Indian Defense, Queen's Knight Variation 1. c4 Nf6 2. Nc3
A17 English Opening: Anglo-Indian Defense 1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 c5 5. e3 e6
A17 English Opening: Anglo-Indian Defense, Hedgehog System 1. c4 Nf6 2. Nc3 e6
A17 English Opening: Anglo-Indian Defense, Nimzo-English 1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4
A17 English Opening: Anglo-Indian Defense, Queen's Indian Formation 1. c4 e6 2. Nc3 Nf6 3. Nf3 b6
A17 English Opening: Anglo-Indian Defense, Queen's Indian Variation 1. c4 e6 2. Nc3 Nf6 3. Nf3 b6 4. e4 Bb7 5. Bd3
A17 English Opening: Anglo-Indian Defense, Zvjaginsev-Krasenkow Attack 1. c4 e6 2. Nc3 Nf6 3. Nf3 Bb4 4. g4
A18 English Opening: Mikenas-Carls Variation 1. c4 e6 2. Nc3 Nf6 3. e4
A18 English Opening: Mikenas-Carls Variation 1. c4 e6 2. Nc3 Nf6 3. e4 Nc6
A18 English Opening: Mikenas-Carls Variation 1. c4 e6 2. Nc3 Nf6 3. e4 d5 4. e5
A19 English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation, Nei Gambit 1. c4 e6 2. Nc3 Nf6 3. e4 c5 4. e5 Ng8
A19 English Opening: Mikenas-Carls, Sicilian 1. c4 e6 2. Nc3 Nf6 3. e4 c5
A20 English Opening: Drill Variation 1. c4 e5 2. g3 h5
A20 English Opening: King's English Variation 1. c4 e5
A20 English Opening: King's English Variation, Kahiko-Hula Gambit 1. c4 e5 2. e3 Nf6 3. f4 exf4 4. Nf3
A20 English Opening: King's English Variation, Nimzowitsch Variation 1. c4 e5 2. Nf3
A20 English Opening: King's English Variation, Nimzowitsch-Flohr Variation 1. c4 e5 2. Nf3 e4
A21 English Opening: King's English Variation 1. c4 e5 2. Nc3 d6 3. Nf3
A21 English Opening: King's English Variation, Keres Defense 1. c4 e5 2. Nc3 d6 3. g3 c6
A21 English Opening: King's English Variation, Kramnik-Shirov Counterattack 1. c4 e5 2. Nc3 Bb4
A21 English Opening: King's English Variation, Reversed Sicilian 1. c4 e5 2. Nc3
A21 English Opening: King's English Variation, Smyslov Defense 1. c4 e5 2. Nc3 d6 3. Nf3 Bg4
A21 English Opening: King's English Variation, Troger Defense 1. c4 e5 2. Nc3 Nc6 3. g3 d6 4. Bg2 Be6
A22 English Opening: Carls-Bremen System 1. c4 e5 2. Nc3 Nf6 3. g3
A22 English Opening: King's English Variation, Adhiban Gambit 1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 c6
A22 English Opening: King's English Variation, Bellon Gambit 1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 b5
A22 English Opening: King's English Variation, Two Knights Variation 1. c4 e5 2. Nc3 Nf6
A22 English Opening: King's English Variation, Two Knights Variation, Reversed Dragon 1. c4 e5 2. Nc3 Nf6 3. g3 d5
A22 English Opening: King's English Variation, Two Knights Variation, Smyslov System 1. c4 e5 2. Nc3 Nf6 3. g3 Bb4
A22 English Opening: King's English, Erbenheimer Gambit 1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 Ng4
A22 English Opening: King's English, Mazedonisch 1. c4 e5 2. Nc3 Nf6 3. f4
A23 English Opening: King's English Variation, Two Knights Variation, Keres Variation 1. c4 e5 2. Nc3 Nf6 3. g3 c6
A23 English Opening: King's English Variation, Two Knights Variation, Keres Variation 1. c4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 c6
A24 English Opening: King's English Variation, Two Knights Variation, Fianchetto Line 1. c4 e5 2. Nc3 Nf6 3. g3 g6
A25 English Opening: Closed, Taimanov Variation 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Rb1 Nh6 5. Bg2 Bg7
A25 English Opening: Closed, Taimanov Variation 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Nh6
A25 English Opening: King's English Variation, Bremen-Hort Variation 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6
A25 English Opening: King's English Variation, Closed System 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3
A25 English Opening: King's English Variation, Hungarian Attack 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Rb1
A25 English Opening: King's English Variation, Reversed Closed Sicilian 1. c4 e5 2. Nc3 Nc6
A25 English Opening: King's English Variation, Taimanov Variation 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7
A26 English Opening: King's English Variation, Botvinnik System 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. e4
A26 English Opening: King's English Variation, Closed System, Full Symmetry 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6
A27 English Opening: King's English Variation, Three Knights System 1. c4 e5 2. Nc3 Nc6 3. Nf3
A28 English Opening: Four Knights System, Nimzowitsch Variation 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4
A28 English Opening: King's English Variation, Four Knights Variation 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6
A28 English Opening: King's English Variation, Four Knights Variation 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Bg5 h6 7. Bh4 Bxc3+ 8. bxc3 Ne5
A28 English Opening: King's English Variation, Four Knights Variation, Bradley Beach Variation 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 e4
A28 English Opening: King's English Variation, Four Knights Variation, Flexible Line 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3
A28 English Opening: King's English Variation, Four Knights Variation, Korchnoi Line 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3
A28 English Opening: King's English Variation, Four Knights Variation, Quiet Line 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3
A28 English Opening: King's English Variation, Four Knights Variation, Quiet Line 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 Bxc3
A28 English Opening: King's English Variation, Four Knights Variation, Quiet Line 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 O-O 6. Nd5 Re8 7. Qf5
A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3
A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nf3 Nc6
A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nf3 Nc6 6. d3
A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nf3 Nc6 6. d3 Be7 7. O-O O-O
A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, Delayed .. Nc6 1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Bg2 O-O 5. Nf3 Re8 6. O-O e4 7. Nd4 Nc6
A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Bc5 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Bc5
A29 English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with Nb6 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nb6
A30 English Opening: Symmetrical Variation 1. c4 c5
A30 English Opening: Symmetrical Variation 1. c4 c5 2. Nf3
A30 English Opening: Symmetrical Variation, Hedgehog Defense 1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4. g3 b6 5. Bg2 Bb7 6. O-O Be7
A30 English Opening: Symmetrical Variation, Napolitano Gambit 1. c4 c5 2. Nf3 Nf6 3. b4
A30 English Opening: Symmetrical, Hedgehog, Flexible Formation 1. c4 e6 2. Nf3 c5 3. Nc3 Nf6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. d4 cxd4 8. Qxd4 d6 9. Rd1 a6 10. b3 Nbd7
A30 English Opening: Wing Gambit 1. c4 c5 2. b4
A31 English Opening: Symmetrical Variation, Anti-Benoni Variation 1. c4 Nf6 2. d4 c5 3. Nf3
A32 English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Nf6
A33 English Opening: Symmetrical Variation, Anti-Benoni Variation, Geller Variation 1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4. d4 Nc6 5. g3 cxd4 6. Nxd4 Qb6
A33 English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense 1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4. d4 cxd4 5. Nxd4 Nc6
A34 English Opening: Symmetrical Variation 1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. g3 d5 5. d4 cxd4
A34 English Opening: Symmetrical Variation, Fianchetto Variation 1. c4 Nf6 2. Nc3 c5 3. g3
A34 English Opening: Symmetrical Variation, Normal Variation 1. c4 c5 2. Nc3
A34 English Opening: Symmetrical Variation, Rubinstein Variation 1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc7
A34 English Opening: Symmetrical Variation, Rubinstein Variation 1. c4 c5 2. Nf3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7
A34 English Opening: Symmetrical Variation, Three Knights Variation 1. c4 c5 2. Nc3 Nf6 3. Nf3
A35 English Opening: Symmetrical Variation 1. c4 c5 2. Nc3 Nf6 3. Nf3 e5
A35 English Opening: Symmetrical Variation, Four Knights Variation 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6
A35 English Opening: Symmetrical Variation, Two Knights Variation 1. c4 c5 2. Nc3 Nc6
A36 English Opening: Symmetrical Variation, Botvinnik System 1. c4 c5 2. e4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2
A36 English Opening: Symmetrical Variation, Botvinnik System Reversed, with e3 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e5
A36 English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation 1. c4 c5 2. Nc3 Nc6 3. g3
A36 English Opening: Symmetrical Variation, Ultra-Symmetrical Variation 1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6
A37 English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e5
A37 English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3
A38 English Opening: Symmetrical Variation, Double Fianchetto 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nf6 6. O-O O-O 7. b3
A38 English Opening: Symmetrical Variation, Duchamp Variation 1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O c5 6. Nc3 Nc6 7. d3
A38 English Opening: Symmetrical Variation, Full Symmetry Line 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7
A39 English Opening: Symmetrical Variation, Mecking Variation 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d4
A40 Australian Defense 1. d4 Na6
A40 Benoni Defense: Franco-Sicilian Hybrid 1. d4 e6 2. c4 c5 3. d5 exd5 4. cxd5 d6 5. Nc3 g6 6. e4 Bg7 7. Nf3 Ne7
A40 Borg Defense: Borg Gambit 1. d4 g5
A40 Colle System: Pterodactyl Variation 1. d4 g6 2. Nf3 Bg7 3. e3 c5 4. Bd3 Qa5+
A40 Colle System: Siroccopteryx Variation 1. d4 g6 2. Nf3 Bg7 3. e3 c5 4. Bd3 cxd4 5. Nxd4 Qa5+
A40 English Defense 1. d4 b6
A40 English Defense 1. d4 e6 2. c4 b6
A40 English Defense: Eastbourne Gambit 1. d4 b6 2. c4 Bb7 3. Nc3 e5
A40 English Defense: Hartlaub Gambit Accepted 1. c4 e6 2. d4 b6 3. Nc3 Bb7 4. e4 f5 5. exf5 Nf6
A40 English Defense: Hartlaub Gambit Declined 1. c4 e6 2. d4 b6 3. Nc3 Bb7 4. e4 f5 5. d5
A40 English Defense: Perrin Variation 1. d4 e6 2. c4 b6 3. e4 Bb7 4. Bd3 Nc6
A40 English Defense: Poli Gambit 1. d4 e6 2. c4 b6 3. e4 Bb7 4. f3 f5 5. exf5 Nh6
A40 Englund Gambit 1. d4 e5
A40 Englund Gambit Declined 1. d4 e5 2. d5
A40 Englund Gambit Declined: Diemer Counterattack 1. d4 e5 2. d5 Bc5 3. e4 Qh4
A40 Englund Gambit Declined: Reversed Alekhine 1. d4 e5 2. Nf3
A40 Englund Gambit Declined: Reversed Brooklyn 1. d4 e5 2. Nf3 e4 3. Ng1
A40 Englund Gambit Declined: Reversed French 1. d4 e5 2. e3
A40 Englund Gambit Declined: Reversed Krebs 1. d4 e5 2. Nf3 e4
A40 Englund Gambit Declined: Reversed Mokele Mbembe 1. d4 e5 2. Nf3 e4 3. Ne5
A40 Englund Gambit: Felbecker Gambit 1. d4 e5 2. dxe5 Nc6 3. Nf3 Bc5
A40 Englund Gambit: Hartlaub-Charlick Gambit 1. d4 e5 2. dxe5 d6
A40 Englund Gambit: Main Line 1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7
A40 Englund Gambit: Mosquito Gambit 1. d4 e5 2. dxe5 Qh4
A40 Englund Gambit: Soller Gambit 1. d4 e5 2. dxe5 f6
A40 Englund Gambit: Soller Gambit Deferred 1. d4 e5 2. dxe5 Nc6 3. Nf3 f6
A40 Englund Gambit: Stockholm Variation 1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. Qd5
A40 Englund Gambit: Zilbermints Gambit 1. d4 e5 2. dxe5 Nc6 3. Nf3 Nge7
A40 Horwitz Defense 1. d4 e6
A40 Horwitz Defense: Zilbermints Gambit 1. d4 e6 2. c4 e5
A40 Kangaroo Defense 1. d4 e6 2. c4 Bb4+
A40 Kangaroo Defense: Keres Defense, Transpositional Variation 1. d4 e6 2. c4 Bb4+ 3. Nc3
A40 Mikenas Defense 1. d4 Nc6
A40 Mikenas Defense: Cannstatter Variation 1. d4 Nc6 2. c4 e5 3. d5 Nd4
A40 Mikenas Defense: Lithuanian Variation 1. d4 Nc6 2. c4 e5 3. d5 Nce7
A40 Mikenas Defense: Pozarek Gambit 1. d4 Nc6 2. c4 e5 3. dxe5 Nxe5 4. Nc3 Nxc4
A40 Modern Defense: Beefeater Variation 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 f5
A40 Modern Defense: Lizard Defense, Pirc-Diemer Gambit 1. d4 g6 2. h4 Nf6 3. h5
A40 Montevideo Defense 1. d4 Nc6 2. d5 Nb8
A40 Polish Defense 1. d4 b5
A40 Polish Defense: Spassky Gambit Accepted 1. d4 b5 2. e4 Bb7 3. Bxb5
A40 Pterodactyl Defense: Central, Benoni Beefeater Pterodactyl 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 d6 5. e4 Bxc3+ 6. bxc3 Qa5
A40 Pterodactyl Defense: Central, Benoni Pterodactyl 1. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 Qa5+
A40 Pterodactyl Defense: Fianchetto, Queen Benoni Pterodactyl 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Qa5
A40 Pterodactyl Defense: Fianchetto, Queen Pteranodon 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Bxc3+ 5. bxc3 Qa5
A40 Pterodactyl Defense: Fianchetto, Queen Pterodactyl 1. d4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 Qa5+
A40 Pterodactyl Defense: Queen Pterodactyl, Quiet Line 1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. e3
A40 Queen's Pawn Game 1. d4
A40 Queen's Pawn Game: Anglo-Slav Opening 1. d4 c6 2. c4 d6
A40 Queen's Pawn Game: Modern Defense 1. d4 g6
A40 Slav Indian: Kudischewitsch Gambit 1. d4 c6 2. Nf3 Nf6 3. c4 b5
A40 Zaire Defense 1. d4 Nc6 2. d5 Nb8 3. e4 Nf6 4. e5 Ng8
A41 Modern Defense 1. d4 g6 2. c4 Bg7 3. Nc3 d6
A41 Modern Defense: Neo-Modern Defense 1. d4 g6 2. c4 Bg7 3. e4 e5
A41 Old Indian Defense 1. d4 d6 2. c4
A41 Queen's Pawn Game 1. d4 d6
A41 Rat Defense: English Rat 1. d4 d6 2. c4 e5
A41 Rat Defense: English Rat, Lisbon Gambit 1. d4 d6 2. c4 e5 3. dxe5 Nc6
A41 Rat Defense: English Rat, Pounds Gambit 1. d4 d6 2. c4 e5 3. dxe5 Be6
A41 Robatsch Defense 1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. e4 Bg4
A41 Wade Defense 1. d4 d6 2. Nf3 Bg4
A41 Zukertort Opening: Wade Defense, Chigorin Plan 1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. Qb3 Rb8
A42 Modern Defense: Averbakh System 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4
A42 Modern Defense: Averbakh Variation, Pseudo-Sämisch 1. d4 g6 2. c4 Bg7 3. e4 d6 4. Be3 Nf6 5. f3
A42 Modern Defense: Kotov Variation 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6
A42 Modern Defense: Randspringer Variation 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 f5
A42 Pterodactyl Defense 1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. e4 Qa5+ 5. Nc3 d6
A42 Pterodactyl Defense: Central, Bogolubovia 1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 c5 5. Nge2 Qa5
A43 Benoni Defense: Benoni Gambit Accepted 1. d4 c5 2. dxc5
A43 Benoni Defense: Benoni Gambit, Schlenker Defense 1. d4 c5 2. dxc5 Na6
A43 Benoni Defense: Benoni-Indian Defense 1. d4 c5 2. d5 Nf6
A43 Benoni Defense: Benoni-Indian Defense, Kingside Move Order 1. d4 c5 2. d5 Nf6 3. Nf3
A43 Benoni Defense: Benoni-Staunton Gambit 1. d4 c5 2. d5 f5 3. e4
A43 Benoni Defense: Cormorant Gambit 1. d4 c5 2. dxc5 b6
A43 Benoni Defense: French Benoni 1. e4 e6 2. d4 c5 3. d5
A43 Benoni Defense: Hawk Variation 1. d4 Nf6 2. Nf3 c5 3. d5 c4
A43 Benoni Defense: Old Benoni 1. d4 c5
A43 Benoni Defense: Old Benoni 1. d4 c5 2. d5
A43 Benoni Defense: Old Benoni 1. d4 c5 2. d5 d6
A43 Benoni Defense: Old Benoni, Mujannah Formation 1. d4 c5 2. d5 f5
A43 Benoni Defense: Old Benoni, Schmid Variation 1. d4 c5 2. d5 d6 3. Nc3 g6
A43 Benoni Defense: Snail Variation 1. d4 c5 2. d5 Na6
A43 Benoni Defense: Woozle 1. d4 c5 2. d5 Nf6 3. Nc3 Qa5
A43 Benoni Defense: Zilbermints-Benoni Gambit 1. d4 c5 2. b4
A43 Benoni Defense: Zilbermints-Benoni Gambit 1. d4 c5 2. Nf3 cxd4 3. b4
A43 Benoni Defense: Zilbermints-Benoni Gambit, Tamarkin Countergambit 1. d4 c5 2. Nf3 cxd4 3. b4 e5
A43 Indian Defense: Pseudo-Benko 1. d4 Nf6 2. Nf3 c5 3. d5 b5
A43 Queen's Pawn Game: Liedmann Gambit 1. d4 c5 2. c4 cxd4 3. e3
A44 Benoni Defense: Old Benoni 1. d4 c5 2. d5 e5
A44 Benoni Defense: Semi-Benoni 1. d4 c5 2. d5 e5 3. e4 d6
A45 Amazon Attack: Siberian Attack 1. d4 Nf6 2. Nc3 d5 3. Qd3
A45 Canard Opening 1. d4 Nf6 2. f4
A45 Indian Defense 1. d4 Nf6
A45 Indian Defense: Gedult Attack, Gedult Attack 1. d4 Nf6 2. f3 d5 3. g4
A45 Indian Defense: Gibbins-Weidenhagen Gambit 1. d4 Nf6 2. g4
A45 Indian Defense: Gibbins-Weidenhagen Gambit Accepted 1. d4 Nf6 2. g4 Nxg4
A45 Indian Defense: Gibbins-Weidenhagen Gambit, Maltese Falcon 1. d4 Nf6 2. g4 Nxg4 3. f3 Nf6 4. e4
A45 Indian Defense: Gibbins-Weidenhagen Gambit, Oshima Defense 1. d4 Nf6 2. g4 e5
A45 Indian Defense: Gibbins-Weidenhagen Gambit, Stummer Gambit 1. d4 Nf6 2. g4 Nxg4 3. e4 d6 4. Be2 Nf6 5. Nc3
A45 Indian Defense: Lazard Gambit 1. d4 Nf6 2. Nd2 e5
A45 Indian Defense: Maddigan Gambit 1. d4 Nf6 2. Nc3 e5
A45 Indian Defense: Omega Gambit 1. d4 Nf6 2. e4
A45 Indian Defense: Omega Gambit, Arafat Gambit 1. d4 Nf6 2. e4 Nxe4 3. Bd3 Nf6 4. Bg5
A45 Indian Defense: Paleface Attack, Blackmar-Diemer Gambit Deferred 1. d4 Nf6 2. f3 d5 3. e4
A45 Indian Defense: Pawn Push Variation 1. d4 Nf6 2. d5
A45 Indian Defense: Reversed Chigorin Defense 1. d4 Nf6 2. Nc3 c5
A45 Indian Defense: Tartakower Attack 1. d4 Nf6 2. g3
A45 Paleface Attack 1. d4 Nf6 2. f3
A45 Queen's Pawn Game: Chigorin Variation 1. d4 Nf6 2. Nc3 d5
A45 Queen's Pawn Game: Veresov, Richter Attack 1. d4 Nf6 2. f3 d5 3. Nc3
A45 Trompowsky Attack 1. d4 Nf6 2. Bg5
A45 Trompowsky Attack: Borg Variation 1. d4 Nf6 2. Bg5 Ne4 3. Bf4 g5
A45 Trompowsky Attack: Classical Defense 1. d4 Nf6 2. Bg5 e6
A45 Trompowsky Attack: Classical Defense, Big Center Variation 1. d4 Nf6 2. Bg5 e6 3. e4
A45 Trompowsky Attack: Edge Variation 1. d4 Nf6 2. Bg5 Ne4 3. Bh4
A45 Trompowsky Attack: Edge Variation, Hergert Gambit 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 c6 4. Nd2 Qa5 5. c3 Nxd2 6. Qxd2 d5 7. e4
A45 Trompowsky Attack: Edge Variation, Hergert Gambit 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 d5 4. f3 Nf6 5. Nc3 Bf5 6. e4
A45 Trompowsky Attack: Poisoned Pawn Variation 1. d4 Nf6 2. Bg5 c5 3. d5 Qb6 4. Nc3
A45 Trompowsky Attack: Raptor Variation 1. d4 Nf6 2. Bg5 Ne4 3. h4
A45 Trompowsky Attack: Raptor Variation, Hergert Gambit 1. d4 Nf6 2. Bg5 Ne4 3. h4 Nxg5 4. hxg5 e5
A46 Döry Defense 1. d4 Nf6 2. Nf3 Ne4
A46 Indian Defense: Czech-Indian 1. d4 Nf6 2. Nf3 c6
A46 Indian Defense: Knights Variation 1. d4 Nf6 2. Nf3
A46 Indian Defense: Knights Variation, Alburt-Miles Variation 1. d4 Nf6 2. Nf3 a6
A46 Indian Defense: London System 1. d4 Nf6 2. Nf3 e6 3. Bf4
A46 Indian Defense: Polish Variation 1. d4 Nf6 2. Nf3 b5
A46 Indian Defense: Spielmann-Indian 1. d4 Nf6 2. Nf3 c5
A46 Indian Defense: Wade-Tartakower Defense 1. d4 Nf6 2. Nf3 d6
A46 Queen's Pawn Game: Torre Attack, Breyer Variation 1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. e3 c5 5. c3 Qb6
A46 Queen's Pawn Game: Veresov Attack, Classical Defense 1. d4 Nf6 2. Nf3 e6 3. Nc3 d5 4. Bg5
A46 Torre Attack: Classical Defense 1. d4 Nf6 2. Nf3 e6 3. Bg5
A46 Torre Attack: Classical Defense, Nimzowitsch Variation 1. d4 Nf6 2. Nf3 e6 3. Bg5 h6
A46 Torre Attack: Classical Defense, Petrosian Gambit 1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. e3 b6 5. d5
A46 Torre Attack: Wagner Gambit 1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. e4
A46 Yusupov-Rubinstein System 1. d4 Nf6 2. Nf3 e6 3. e3
A47 Indian Defense: Schnepper Gambit 1. d4 Nf6 2. Nf3 b6 3. c3 e5
A47 Marienbad System 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5
A47 Marienbad System: Berg Variation 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. c4 cxd4 6. Qxd4
A47 Pseudo Queen's Indian Defense 1. d4 Nf6 2. Nf3 b6
A48 East Indian Defense 1. d4 Nf6 2. Nf3 g6
A48 Indian Defense: Colle System, King's Indian Variation 1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 d6
A48 London System 1. d4 Nf6 2. Nf3 g6 3. Bf4
A48 Queen's Pawn Game: Barry Attack 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4
A48 Queen's Pawn Game: Barry Attack 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7
A48 Queen's Pawn Game: Barry Attack, Grünfeld Variation 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. Be2
A48 Queen's Pawn Game: Barry Attack, Tarzan Attack 1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bf4 Bg7 5. Qd2
A48 Queen's Pawn Game: Torre Attack, Grünfeld Variation, Main Line 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 O-O
A48 Torre Attack: Fianchetto Defense 1. d4 Nf6 2. Nf3 g6 3. Bg5
A48 Torre Attack: Fianchetto Defense, Euwe Variation 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 c5
A49 Indian Defense: Przepiorka Variation 1. d4 Nf6 2. Nf3 g6 3. g3
A50 Indian Defense: Medusa Gambit 1. d4 Nf6 2. c4 g5
A50 Indian Defense: Normal Variation 1. d4 Nf6 2. c4
A50 Indian Defense: Pyrenees Gambit 1. d4 Nf6 2. c4 b5
A50 Mexican Defense 1. d4 Nf6 2. c4 Nc6
A50 Mexican Defense: Horsefly Gambit 1. d4 Nf6 2. c4 Nc6 3. d5 Ne5 4. f4
A50 Queen's Indian Accelerated 1. d4 Nf6 2. c4 b6
A50 Slav Indian 1. d4 Nf6 2. c4 c6
A51 Indian Defense: Budapest Defense 1. d4 Nf6 2. c4 e5
A51 Indian Defense: Budapest Defense, Fajarowicz Defense, Bonsdorf Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 b6
A51 Indian Defense: Budapest Defense, Fajarowicz Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4
A51 Indian Defense: Budapest Defense, Fajarowicz-Steiner Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Qc2
A52 Indian Defense: Budapest Defense 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4
A52 Indian Defense: Budapest Defense, Adler Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3
A52 Indian Defense: Budapest Defense, Alekhine Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4
A52 Indian Defense: Budapest Defense, Alekhine Variation, Abonyi Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6
A52 Indian Defense: Budapest Defense, Alekhine Variation, Tartakower Defense 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 d6
A52 Indian Defense: Budapest Defense, Rubinstein Variation 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4
A53 Old Indian Defense 1. d4 Nf6 2. c4 d6
A53 Old Indian Defense: Aged Gibbon Gambit 1. d4 Nf6 2. c4 d6 3. g4
A53 Old Indian Defense: Czech Variation, with Nc3 1. d4 Nf6 2. c4 d6 3. Nc3 c6
A53 Old Indian Defense: Czech Variation, with Nf3 1. d4 Nf6 2. c4 d6 3. Nf3 c6
A53 Old Indian Defense: Janowski Variation 1. d4 Nf6 2. c4 d6 3. Nc3 Bf5
A53 Old Indian Defense: Janowski Variation, Fianchetto Variation 1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. g3
A53 Old Indian Defense: Janowski Variation, Grinberg Gambit 1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. e4
A53 Old Indian Defense: Janowski Variation, Main Line 1. d4 Nf6 2. c4 d6 3. Nc3 Bf5 4. f3
A54 Old Indian Defense: Duz-Khotimirsky Variation 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. e3 Nbd7 5. Bd3
A54 Old Indian Defense: Tartakower-Indian 1. d4 Nf6 2. c4 d6 3. Nf3 Bg4
A54 Old Indian Defense: Two Knights Variation 1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3
A54 Old Indian Defense: Ukrainian Variation 1. d4 Nf6 2. c4 d6 3. Nc3 e5
A55 Old Indian Defense: Normal Variation 1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3
A56 Benoni Defense 1. d4 Nf6 2. c4 c5
A56 Benoni Defense: Czech Benoni Defense 1. d4 Nf6 2. c4 c5 3. d5 e5
A56 Benoni Defense: Hromádka System 1. d4 Nf6 2. c4 c5 3. d5 d6
A56 Benoni Defense: King's Indian System 1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 g6
A56 Benoni Defense: Weenink Variation 1. d4 Nf6 2. c4 c5 3. dxc5 e6
A56 Grünfeld Defense: Three Knights Variation, Burille Variation, Reversed Tarrasch 1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 Bg7 5. Nf3 O-O 6. Be2 cxd4 7. exd4 d5 8. O-O Nc6
A56 Vulture Defense 1. d4 Nf6 2. c4 c5 3. d5 Ne4
A57 Benko Gambit 1. d4 Nf6 2. c4 c5 3. d5 b5
A57 Benko Gambit Accepted 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6
A57 Benko Gambit Accepted: Dlugy Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. f3
A57 Benko Gambit Accepted: Modern Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. e3
A57 Benko Gambit Accepted: Pawn Return Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6
A57 Benko Gambit Declined: Bishop Attack 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Bg5
A57 Benko Gambit Declined: Hjørring Countergambit 1. d4 Nf6 2. c4 c5 3. d5 b5 4. e4
A57 Benko Gambit Declined: Main Line 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3
A57 Benko Gambit Declined: Pseudo-Sämisch 1. d4 Nf6 2. c4 c5 3. d5 b5 4. f3
A57 Benko Gambit Declined: Quiet Line 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nd2
A57 Benko Gambit Declined: Sosonko Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. a4
A57 Benko Gambit: Mutkin Countergambit 1. d4 Nf6 2. c4 c5 3. d5 b5 4. g4
A57 Benko Gambit: Nescafe Frappe Attack 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3 axb5 6. e4 b4 7. Nb5 d6 8. Bc4
A57 Benko Gambit: Zaitsev System 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3
A57 Benko Gambit: Zaitsev Variation, Nescafe Frappe Attack 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3 axb5 6. e4 b4 7. Nb5
A58 Benko Gambit Accepted: Central Storming Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. f4
A58 Benko Gambit Accepted: Fianchetto Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. g3 d6 8. Bg2 Bg7 9. Nf3
A58 Benko Gambit Accepted: Fully Accepted Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6
A58 Benko Gambit: Fianchetto Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6 7. Nf3 g6 8. g3
A58 Benko Gambit: Nd2 Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6 7. Nf3 g6 8. Nd2
A59 Benko Gambit 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. e4 Bxf1 8. Kxf1 d6 9. g3
A59 Benko Gambit Accepted: King Walk Variation 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. Nf3 d6 8. e4 Bxf1 9. Kxf1 Bg7 10. g3 O-O 11. Kg2
A59 Benko Gambit Accepted: Yugoslav 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6 7. e4
A59 Benko Gambit Accepted: Yugoslav 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. e4 Bxf1 8. Kxf1 d6 9. Nge2
A60 Benoni Defense: Modern Variation 1. d4 Nf6 2. c4 c5 3. d5 e6
A60 Benoni Defense: Modern Variation, Snake Variation 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 Bd6
A61 Benoni Defense 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6
A61 Benoni Defense: Fianchetto Variation 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. g3
A61 Benoni Defense: Knight's Tour Variation 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2
A61 Benoni Defense: Uhlmann Variation 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg5
A62 Benoni Defense: Fianchetto Variation 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O
A63 Benoni Defense: Fianchetto Variation, Hastings Defense 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Nbd7
A64 Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line 1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Nbd7 11. Nd2 Re8
A65 Benoni Defense: King's Pawn Line 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4
A66 Benoni Defense: Mikenas Variation 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. e5
A66 Benoni Defense: Pawn Storm Variation 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4
A67 Benoni Defense: Taimanov Variation 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+
A68 Benoni Defense: Four Pawns Attack 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Nf3 O-O
A69 Benoni Defense: Four Pawns Attack, Main Line 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8
A70 Benoni Defense: Classical Variation 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4
A70 Benoni Defense: Classical Variation, New York Variation 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. h3
A70 Benoni Defense: Classical Variation, Traditional Variation 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Be2
A71 Benoni Defense: Classical Variation, Averbakh-Grivas Attack 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Bg5
A72 Benoni Defense: Classical Variation 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O
A73 Benoni Defense: Classical Variation, Main Line 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O
A74 Benoni Defense: Classical Variation, Full Line 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O a6 10. a4
A75 Benoni Defense: Classical Variation, Argentine Counterattack 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Be2 O-O 9. O-O a6 10. a4 Bg4
A76 Benoni Defense: Classical Variation, Czerniak Defense 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O Re8
A77 Benoni Defense: Classical Variation, Czerniak Defense, Tal Line 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2
A78 Benoni Defense: Classical Variation, Czerniak Defense 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 Na6
A79 Benoni Defense: Classical Variation, Czerniak Defense 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 Na6 11. f3
A80 Dutch Defense 1. d4 f5
A80 Dutch Defense: Alapin Variation 1. d4 f5 2. Qd3
A80 Dutch Defense: Hevendehl Gambit 1. d4 f5 2. g4 e5
A80 Dutch Defense: Hopton Attack 1. d4 f5 2. Bg5
A80 Dutch Defense: Janzen-Korchnoi Gambit 1. d4 f5 2. h3 Nf6 3. g4
A80 Dutch Defense: Kingfisher Gambit 1. d4 f5 2. Nc3 d5 3. e4
A80 Dutch Defense: Korchnoi Attack 1. d4 f5 2. h3
A80 Dutch Defense: Krejcik Gambit 1. d4 f5 2. g4
A80 Dutch Defense: Krejcik Gambit, Tate Gambit 1. d4 f5 2. g4 fxg4 3. e4 d5 4. Nc3
A80 Dutch Defense: Manhattan Gambit, Anti-Classical Line 1. d4 f5 2. Qd3 e6 3. g4
A80 Dutch Defense: Manhattan Gambit, Anti-Leningrad 1. d4 f5 2. Qd3 g6 3. g4
A80 Dutch Defense: Manhattan Gambit, Anti-Modern 1. d4 f5 2. Qd3 d6 3. g4
A80 Dutch Defense: Manhattan Gambit, Anti-Stonewall 1. d4 f5 2. Qd3 d5 3. g4
A80 Dutch Defense: Omega-Isis Gambit 1. d4 f5 2. Nf3 e5
A80 Dutch Defense: Raphael Variation 1. d4 f5 2. Nc3
A80 Dutch Defense: Senechaud Gambit 1. d4 f5 2. Bf4 e6 3. g4
A80 Dutch Defense: Spielmann Gambit 1. d4 f5 2. Nc3 Nf6 3. g4
A80 Queen's Pawn Game: Veresov Attack, Dutch System 1. d4 f5 2. Nc3 d5
A81 Dutch Defense: Blackburne Variation 1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nh3
A81 Dutch Defense: Fianchetto Attack 1. d4 f5 2. g3
A81 Dutch Defense: Leningrad Variation, Carlsbad Variation 1. d4 f5 2. g3 g6 3. Bg2 Bg7 4. Nh3
A81 Dutch Defense: Leningrad, Basman System 1. d4 f5 2. g3 c6 3. Bg2 g6 4. Nf3 Bg7 5. O-O Nh6
A81 Dutch Defense: Semi-Leningrad Variation 1. d4 f5 2. g3 Nf6 3. Bg2 g6
A82 Dutch Defense: Blackmar's Second Gambit 1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. f3
A82 Dutch Defense: Staunton Gambit 1. d4 f5 2. e4
A82 Dutch Defense: Staunton Gambit Accepted 1. d4 f5 2. e4 fxe4
A82 Dutch Defense: Staunton Gambit, American Attack 1. d4 f5 2. e4 fxe4 3. Nd2
A82 Dutch Defense: Staunton Gambit, Tartakower Variation 1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. g4
A82 Rat Defense: Balogh Defense 1. e4 d6 2. d4 f5
A83 Dutch Defense: Staunton Gambit 1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5
A83 Dutch Defense: Staunton Gambit, Alekhine Variation 1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 g6 5. h4
A83 Dutch Defense: Staunton Gambit, Chigorin Variation 1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 c6
A83 Dutch Defense: Staunton Gambit, Lasker Variation 1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 g6 5. f3
A83 Dutch Defense: Staunton Gambit, Nimzowitsch Variation 1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 b6
A84 Dutch Defense 1. d4 f5 2. c4
A84 Dutch Defense: Bellon Gambit 1. d4 f5 2. c4 e6 3. e4
A84 Dutch Defense: Bladel Variation 1. d4 f5 2. c4 g6 3. Nc3 Nh6
A84 Dutch Defense: Classical Variation 1. d4 f5 2. c4 e6
A84 Dutch Defense: Krause Variation 1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. Nf3 Nc6
A84 Dutch Defense: Normal Variation 1. d4 f5 2. c4 Nf6
A84 Dutch Defense: Rubinstein Variation 1. d4 f5 2. c4 e6 3. Nc3
A85 Dutch Defense: Queen's Knight Variation 1. d4 f5 2. c4 Nf6 3. Nc3
A86 Dutch Defense: Fianchetto Variation 1. d4 f5 2. c4 Nf6 3. g3
A86 Dutch Defense: Hort-Antoshin System 1. d4 f5 2. c4 Nf6 3. g3 d6 4. Bg2 c6 5. Nc3 Qc7
A86 Dutch Defense: Leningrad Variation 1. d4 f5 2. c4 Nf6 3. g3 g6
A87 Dutch Defense: Leningrad Variation 1. d4 f5 2. c4 Nf6 3. g3 g6 4. Bg2 Bg7 5. Nf3
A88 Dutch Defense: Leningrad Variation, Warsaw Variation 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 c6
A89 Dutch Defense: Leningrad Variation, Matulovic Variation 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. O-O O-O 6. c4 d6 7. Nc3 Nc6
A90 Dutch Defense: Classical Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2
A90 Dutch Defense: Classical Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 d5 5. Nf3
A90 Dutch Defense: Nimzo-Dutch Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Bb4+
A90 Dutch Defense: Nimzo-Dutch Variation, Alekhine Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Bb4+ 5. Bd2 Be7
A90 Dutch Defense: Stonewall Variation, Modern Variation 1. d4 f5 2. c4 e6 3. Nf3 Nf6 4. g3 c6 5. Bg2 d5 6. O-O Bd6
A91 Dutch Defense: Classical Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7
A91 Dutch Defense: Classical Variation, Blackburne Attack 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nh3
A92 Dutch Defense: Alekhine Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O Ne4
A92 Dutch Defense: Classical Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O
A92 Dutch Defense: Stonewall Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5 7. Nc3
A92 Dutch Defense: Stonewall Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5
A93 Dutch Defense: Stonewall Variation, Botvinnik Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5 7. b3
A94 Dutch Defense: Stonewall Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5 7. b3 c6 8. Ba3
A95 Dutch Defense: Stonewall Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5 7. Nc3 c6
A95 Dutch Defense: Stonewall Variation, Chekhover Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5 7. Nc3 c6 8. Qc2 Qe8 9. Bg5
A96 Dutch Defense: Classical Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6
A96 Dutch Defense: Classical Variation, Buenos Aires Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 a5
A96 Dutch Defense: Classical Variation, Huisl Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 Ne4
A97 Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 Qe8
A97 Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Winter Variation 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 Qe8 8. Re1
A98 Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Alatortsev-Lisitsyn Line 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 Qe8 8. Qc2
A99 Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation, Modern Main Line 1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d6 7. Nc3 Qe8 8. b3