Chess Openings Encyclopedia - Free Download
A comprehensive database of 3,690 named chess openings from the Encyclopaedia of Chess Openings (ECO), including ECO codes, opening names, and move sequences in PGN notation. Contains 3690 records. Download in Excel, CSV, PDF formats.
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| 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, with d5 | 1. b4 d5 |
| A00 | Polish Opening, with d5 | 1. b4 d5 2. Bb2 Nf6 3. Nf3 |
| 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 g6 3. Bb2 |
| 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, with Bf5 | 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 |
| A07 | King's Indian Attack, with Bf5 | 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 h6 |
| A07 | King's Indian Attack, with Bf5 | 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 h6 6. c4 dxc4 |
| A07 | King's Indian Attack, with Bf5 | 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 e6 6. Nbd2 |
| A07 | King's Indian Attack, with Bf5 | 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 e6 6. Nh4 |
| A07 | King's Indian Attack, with e6 | 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 |
| A07 | King's Indian Attack, with e6 | 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 |
| 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: Keres Variation | 1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. O-O 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: Advance Variation, Navara Gambit | 1. Nf3 d5 2. c4 d4 3. b4 g5 |
| 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 |
| A11 | Réti Opening: Anglo-Slav Variation, Gurevich System | 1. c4 c6 2. Nf3 d5 3. e3 |
| A11 | Réti Opening: Anglo-Slav Variation, Gurevich System | 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Qc2 |
| A11 | Réti Opening: Anglo-Slav Variation, Gurevich System | 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 Nbd7 5. Qc2 |
| A11 | Réti Opening: Anglo-Slav Variation, Gurevich System | 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 Nbd7 5. b3 e5 |
| A11 | Réti Opening: Anglo-Slav Variation, Gurevich System | 1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 e6 5. b3 Bd6 |
| A11 | Réti Opening: Anglo-Slav Variation, with g3 | 1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. b3 g6 |
| A11 | Réti Opening: Anglo-Slav Variation, with g3 | 1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 |
| A11 | Réti Opening: Anglo-Slav Variation, with g3 | 1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 dxc4 |
| A11 | Réti Opening: Anglo-Slav Variation, with g3 | 1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bf5 |
| A11 | Réti Opening: Anglo-Slav Variation, with g3 | 1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bf5 5. O-O e6 6. d3 |
| A11 | Réti Opening: Anglo-Slav Variation, with g3 | 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 h6 6. c4 e6 |
| A12 | Réti Opening: Anglo-Slav Variation | 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 |
| 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 d5 2. c4 c6 3. b3 Bf5 |
| A12 | Réti Opening: Anglo-Slav Variation, Bogoljubow Variation | 1. Nf3 d5 2. c4 c6 3. b3 Bf5 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 |
| A12 | Réti Opening: Anglo-Slav Variation, with dxc4 | 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 dxc4 |
| 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 | 1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O |
| A13 | English Opening: Agincourt Defense | 1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O 6. d4 |
| 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 | English Opening: Agincourt Defense, Neo-Catalan Declined | 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. b3 |
| A14 | English Opening: Agincourt Defense, Neo-Catalan Declined | 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 |
| A14 | English Opening: Agincourt Defense, Neo-Catalan Declined | 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 7. e3 |
| A14 | English Opening: Agincourt Defense, Neo-Catalan Declined | 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 7. e3 d4 |
| A14 | English Opening: Agincourt Defense, Neo-Catalan Declined | 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 7. e3 Nc6 |
| A14 | English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 | 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3 |
| A14 | English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 | 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3 b6 |
| A14 | English Opening: Agincourt Defense, Neo-Catalan Declined, Early b3 | 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3 c5 |
| A14 | Réti Opening: Anglo-Slav Variation | 1. Nf3 d5 2. c4 c6 3. g3 Nf6 4. Bg2 e6 5. b3 Be7 6. Bb2 |
| 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 |
| A15 | English Orangutan | 1. c4 Nf6 2. Nf3 g6 3. 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 .. d6 | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bc5 5. d3 d6 6. Bg2 |
| A29 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6 | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bc5 5. d3 d6 6. Bg2 O-O 7. O-O |
| A29 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, Be7 | 1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 d6 5. d3 Be7 6. Nf3 O-O |
| A29 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, a6 | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bc5 5. d3 d6 6. Bg2 a6 |
| A29 | English Opening: King's English Variation, Four Knights Variation, Fianchetto Line, with .. d6, h6 | 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bc5 5. d3 d6 6. Bg2 h6 |
| 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, Botvinnik System Reversed, with Nf3 | 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e5 6. O-O d6 |
| 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 6. O-O Nge7 |
| 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 6. O-O Nge7 7. a3 |
| 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 6. O-O Nge7 7. d3 |
| 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 6. O-O Nge7 7. d3 d6 |
| 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 |