Sicilian Defense
What is the Sicilian Defense?
The Sicilian Defense is a chess opening that begins with 1. e4 c5. It is classified under ECO B20–B99 and has 400 named variations. Black chooses it with the move c5.
Moves: 1. e4 c5
ECO: B20–B99
Chosen by: Black
Main variations
1. e4 c5 2. Nf3
1. e4 c5 2. c3
1. e4 c5 2. Qg4
1. e4 c5 2. Bc4
1. e4 c5 2. Nh3
1. e4 c5 2. Nc3
All 400 variations
| ECO | Variation | Moves |
|---|---|---|
| B20 | Main line | 1. e4 c5 |
| B27 | Main line | 1. e4 c5 2. Nf3 |
| B22 | Alapin Variation | 1. e4 c5 2. c3 |
| B20 | Amazon Attack | 1. e4 c5 2. Qg4 |
| B20 | Bowdler Attack | 1. e4 c5 2. Bc4 |
| B20 | Brick Variation | 1. e4 c5 2. Nh3 |
| B23 | Closed | 1. e4 c5 2. Nc3 |
| B20 | Czerniak Attack | 1. e4 c5 2. b3 |
| B20 | Grob Variation | 1. e4 c5 2. g4 |
| B20 | Keres Variation | 1. e4 c5 2. Ne2 |
| B20 | King David's Opening | 1. e4 c5 2. Ke2 |
| B20 | Kronberger Variation | 1. e4 c5 2. Na3 |
| B20 | Lasker-Dunne Attack | 1. e4 c5 2. g3 |
| B21 | McDonnell Attack | 1. e4 c5 2. f4 |
| B20 | Mengarini Variation | 1. e4 c5 2. a3 |
| B20 | Myers Attack, with a4 | 1. e4 c5 2. a4 |
| B20 | Myers Attack, with h4 | 1. e4 c5 2. h4 |
| B21 | Smith-Morra Gambit | 1. e4 c5 2. d4 |
| B20 | Staunton-Cochrane Variation | 1. e4 c5 2. c4 |
| B20 | Wing Gambit | 1. e4 c5 2. b4 |
| B27 | Brussels Gambit | 1. e4 c5 2. Nf3 f5 |
| B27 | Bücker Variation | 1. e4 c5 2. Nf3 h6 |
| B23 | Closed | 1. e4 c5 2. Nc3 e6 |
| B23 | Closed, Traditional | 1. e4 c5 2. Nc3 Nc6 |
| B20 | Czerniak Attack, Queen Fianchetto Variation | 1. e4 c5 2. b3 b6 |
| B40 | French Variation | 1. e4 c5 2. Nf3 e6 |
| B27 | Hyperaccelerated Dragon | 1. e4 c5 2. Nf3 g6 |
| B27 | Jalalabad Variation | 1. e4 c5 2. Nf3 e5 |
| B27 | Katalimov Variation | 1. e4 c5 2. Nf3 b6 |
| B50 | Modern Variations | 1. e4 c5 2. Nf3 d6 |
| B27 | Mongoose Variation | 1. e4 c5 2. Nf3 Qa5 |
| B29 | Nimzowitsch Variation | 1. e4 c5 2. Nf3 Nf6 |
| B28 | O'Kelly Variation | 1. e4 c5 2. Nf3 a6 |
| B30 | Old Sicilian | 1. e4 c5 2. Nf3 Nc6 |
| B27 | Polish Gambit | 1. e4 c5 2. Nf3 b5 |
| B27 | Quinteros Variation | 1. e4 c5 2. Nf3 Qc7 |
| B50 | Main line | 1. e4 c5 2. Nf3 d6 3. d4 |
| B23 | Closed | 1. e4 c5 2. Nc3 e6 3. g3 |
| B23 | Closed, Chameleon Variation | 1. e4 c5 2. Nc3 Nc6 3. Nge2 |
| B24 | Closed, Fianchetto Variation | 1. e4 c5 2. Nc3 Nc6 3. g3 |
| B23 | Closed, Grob Attack | 1. e4 c5 2. Nc3 Nc6 3. g4 |
| B50 | Delayed Alapin Variation, with d6 | 1. e4 c5 2. Nf3 d6 3. c3 |
| B40 | Delayed Alapin Variation, with e6 | 1. e4 c5 2. Nf3 e6 3. c3 |
| B20 | Euwe Attack, Prins Gambit | 1. e4 c5 2. b3 d5 3. Bb2 |
| B40 | French Variation, Westerinen Attack | 1. e4 c5 2. Nf3 e6 3. b3 |
| B23 | Grand Prix Attack | 1. e4 c5 2. Nc3 Nc6 3. f4 |
| B21 | Halasz Gambit | 1. e4 c5 2. d4 cxd4 3. f4 |
| B27 | Hyperaccelerated Dragon | 1. e4 c5 2. Nf3 g6 3. d4 |
| B50 | Kopec System | 1. e4 c5 2. Nf3 d6 3. Bd3 |
| B40 | Kramnik Variation | 1. e4 c5 2. Nf3 e6 3. c4 |
| B21 | McDonnell Attack, Toilet Variation | 1. e4 c5 2. f4 d5 3. Nc3 |
| B21 | Morphy Gambit | 1. e4 c5 2. d4 cxd4 3. Nf3 |
| B51 | Moscow Variation | 1. e4 c5 2. Nf3 d6 3. Bb5+ |
| B29 | Nimzowitsch Variation, Advance Variation | 1. e4 c5 2. Nf3 Nf6 3. e5 |
| B29 | Nimzowitsch Variation, Closed Variation | 1. e4 c5 2. Nf3 Nf6 3. Nc3 |
| B30 | Nyezhmetdinov-Rossolimo Attack | 1. e4 c5 2. Nf3 Nc6 3. Bb5 |
| B28 | O'Kelly Variation, Aronin System | 1. e4 c5 2. Nf3 a6 3. Be2 |
| B28 | O'Kelly Variation, Kieseritzky System | 1. e4 c5 2. Nf3 a6 3. b3 |
| B28 | O'Kelly Variation, Maróczy Bind | 1. e4 c5 2. Nf3 a6 3. c4 |
| B28 | O'Kelly Variation, Normal System | 1. e4 c5 2. Nf3 a6 3. d4 |
| B28 | O'Kelly Variation, Quiet System | 1. e4 c5 2. Nf3 a6 3. d3 |
| B28 | O'Kelly Variation, Réti System | 1. e4 c5 2. Nf3 a6 3. g3 |
| B28 | O'Kelly Variation, Venice System | 1. e4 c5 2. Nf3 a6 3. c3 |
| B28 | O'Kelly Variation, Wing Gambit | 1. e4 c5 2. Nf3 a6 3. b4 |
| B28 | O'Kelly Variation, Yerevan System | 1. e4 c5 2. Nf3 a6 3. Nc3 |
| B32 | Open | 1. e4 c5 2. Nf3 Nc6 3. d4 |
| B30 | Portsmouth Gambit | 1. e4 c5 2. Nf3 Nc6 3. b4 |
| B21 | Smith-Morra Gambit | 1. e4 c5 2. d4 cxd4 3. c3 |
| B40 | Wing Gambit Deferred | 1. e4 c5 2. Nf3 e6 3. b4 |
| B20 | Wing Gambit, Abrahams Variation | 1. e4 c5 2. b4 cxb4 3. Bb2 |
| B50 | Wing Gambit, Deferred Variation | 1. e4 c5 2. Nf3 d6 3. b4 |
| B20 | Wing Gambit, Marshall Variation | 1. e4 c5 2. b4 cxb4 3. a3 |
| B20 | Wing Gambit, Santasiere Variation | 1. e4 c5 2. b4 cxb4 3. c4 |
| B50 | Main line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 |
| B27 | Acton Extension | 1. e4 c5 2. Nf3 g6 3. c4 Bh6 |
| B22 | Alapin Variation, Anti-Alapin Gambit | 1. e4 c5 2. c3 d5 3. exd5 Nf6 |
| B22 | Alapin Variation, Barmen Defense | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 |
| B24 | Closed | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 |
| B30 | Closed, Anti-Sveshnikov Variation | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 |
| B23 | Closed, Korchnoi Defense | 1. e4 c5 2. Nc3 e6 3. g3 d5 |
| B27 | Double-Dutch Gambit | 1. e4 c5 2. Nf3 f5 3. exf5 Nh6 |
| B40 | Drazic Variation | 1. e4 c5 2. Nf3 e6 3. d4 a6 |
| B32 | Franco-Sicilian Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 e6 |
| B27 | Frederico Variation | 1. e4 c5 2. Nf3 g6 3. d4 f5 |
| B40 | French Variation, Open | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 |
| B27 | Hyperaccelerated Pterodactyl | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 |
| B50 | Kotov Gambit | 1. e4 c5 2. Nf3 d6 3. g3 b5 |
| B40 | Marshall Counterattack | 1. e4 c5 2. Nf3 e6 3. d4 d5 |
| B21 | McDonnell Attack | 1. e4 c5 2. f4 Nc6 3. Nf3 e6 |
| B21 | McDonnell Attack, Tal Gambit | 1. e4 c5 2. f4 d5 3. exd5 Nf6 |
| B50 | Modern Variations, Anti-Qxd4 Move Order | 1. e4 c5 2. Nf3 d6 3. d4 Nf6 |
| B52 | Moscow Variation, Main Line | 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 |
| B30 | Nyezhmetdinov-Rossolimo Attack, Brooklyn Retreat Defense | 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nb8 |
| B31 | Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 |
| B28 | O'Kelly Variation, Maróczy Bind, Paulsen Line | 1. e4 c5 2. Nf3 a6 3. c4 e6 |
| B28 | O'Kelly Variation, Maróczy Bind, Robatsch Line | 1. e4 c5 2. Nf3 a6 3. c4 d6 |
| B28 | O'Kelly Variation, Venice System, Barcza Line | 1. e4 c5 2. Nf3 a6 3. c3 Nf6 |
| B28 | O'Kelly Variation, Venice System, Ljubojevic Line | 1. e4 c5 2. Nf3 a6 3. c3 b5 |
| B28 | O'Kelly Variation, Venice System, Steiner Line | 1. e4 c5 2. Nf3 a6 3. c3 d6 |
| B32 | Open | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 |
| B21 | Smith-Morra Gambit Accepted | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 |
| B21 | Smith-Morra Gambit Declined, Alapin Formation | 1. e4 c5 2. d4 cxd4 3. c3 Nf6 |
| B21 | Smith-Morra Gambit Declined, Center Formation | 1. e4 c5 2. d4 cxd4 3. c3 e5 |
| B21 | Smith-Morra Gambit Declined, Push Variation | 1. e4 c5 2. d4 cxd4 3. c3 d3 |
| B21 | Smith-Morra Gambit Declined, Scandinavian Formation | 1. e4 c5 2. d4 cxd4 3. c3 d5 |
| B21 | Smith-Morra Gambit Declined, Wing Formation | 1. e4 c5 2. d4 cxd4 3. c3 Qa5 |
| B20 | Wing Gambit, Carlsbad Variation | 1. e4 c5 2. b4 cxb4 3. a3 bxa3 |
| B20 | Big Clamp Formation | 1. e4 c5 2. d3 Nc6 3. c3 d6 4. f4 |
| B53 | Chekhover Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 |
| B23 | Closed | 1. e4 c5 2. Nc3 e6 3. Nge2 a6 4. g3 |
| B23 | Closed, Portland Attack | 1. e4 c5 2. Nc3 Nc6 3. d3 g6 4. g4 |
| B20 | Kronberger Variation, Nemeth Gambit | 1. e4 c5 2. Na3 Nc6 3. d4 cxd4 4. Bc4 |
| B21 | McDonnell Attack | 1. e4 c5 2. f4 Nc6 3. Nf3 e6 4. d3 |
| B50 | Modern Variations, Tartakower | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. c3 |
| B21 | Morphy Gambit, Andreaschek Gambit | 1. e4 c5 2. d4 cxd4 3. Nf3 e5 4. c3 |
| B30 | Nyezhmetdinov-Rossolimo Attack, San Francisco Gambit | 1. e4 c5 2. Nf3 Nc6 3. Bb5 Na5 4. b4 |
| B28 | O'Kelly Variation, Normal System, Cortlever Gambit | 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Bc4 |
| B28 | O'Kelly Variation, Normal System, Smith-Morra Line | 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. c3 |
| B28 | O'Kelly Variation, Normal System, Zagorovsky Line | 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Qxd4 |
| B32 | Open | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 |
| B21 | Smith-Morra Gambit Accepted, Danish Variation | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nf3 |
| B21 | Smith-Morra Gambit Declined, Dubois Variation | 1. e4 c5 2. d4 cxd4 3. c3 d3 4. c4 |
| B40 | Smith-Morra Gambit Deferred | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. c3 |
| B32 | Accelerated Dragon | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 |
| B22 | Alapin Variation, Smith-Morra Declined | 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 |
| B23 | Closed | 1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 d5 |
| B24 | Closed | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 |
| B54 | Dragon Variation, Accelerated Dragon | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 |
| B32 | Flohr Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 |
| B40 | French Variation, Normal | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 |
| B20 | Gloria Variation | 1. e4 c5 2. c4 d6 3. Nc3 Nc6 4. g3 h5 |
| B32 | Godiva Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 |
| B41 | Kan Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 |
| B40 | Kveinis Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 |
| B32 | Löwenthal Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 |
| B21 | McDonnell Attack | 1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. Bb5 Bg7 |
| B50 | Modern Variations, Anti-Qxd4 Move Order Accepted | 1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. dxc5 Nxe4 |
| B54 | Modern Variations, Main Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 |
| B32 | Nimzo-American Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5 |
| B29 | Nimzowitsch Variation, Exchange Variation | 1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 Nxc3 |
| B28 | O'Kelly Variation, Normal System, Taimanov Line | 1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 e5 |
| B28 | O'Kelly Variation, Venice System, Gambit Line | 1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Nf6 |
| B33 | Open | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 |
| B40 | Paulsen-Basman Defense | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 |
| B21 | Smith-Morra Gambit Accepted, Fianchetto Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 g6 |
| B44 | Taimanov Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 |
| B34 | Accelerated Dragon, Exchange Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nxc6 |
| B36 | Accelerated Dragon, Maróczy Bind | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 |
| B34 | Accelerated Dragon, Modern Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 |
| B22 | Alapin Variation, Barmen Defense | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 g6 5. Nf3 |
| B22 | Alapin Variation, Barmen Defense | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 |
| B23 | Closed | 1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 d5 5. Bb5 |
| B23 | Closed, Carlsen Variation | 1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2 |
| B21 | Coles Sicilian Gambit | 1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Bc4 |
| B22 | Heidenfeld Variation | 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Na3 |
| B43 | Kan Variation, Knight Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 |
| B41 | Kan Variation, Maróczy Bind, Réti Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 |
| B42 | Kan Variation, Modern Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 |
| B54 | Modern Variations, Ginsberg Gambit | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Bc4 |
| B52 | Moscow Variation, Sokolsky Variation | 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 |
| B54 | Prins Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 |
| B45 | Taimanov Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 |
| B44 | Taimanov Variation, Szén Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 |
| B20 | Wing Gambit, Marienbad Variation | 1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Bb2 |
| B37 | Accelerated Dragon, Maróczy Bind | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 |
| B22 | Alapin Variation, Barmen Defense, Modern Line | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 |
| B40 | Alapin Variation, Sherzer Variation | 1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 Nc6 |
| B53 | Chekhover Variation, Zaitsev Defense | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Qd7 |
| B56 | Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 |
| B25 | Closed | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 |
| B30 | Closed, Anti-Sveshnikov Variation, with d6 | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 |
| B30 | Closed, Anti-Sveshnikov Variation, with Nf6 | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 |
| B22 | Delayed Alapin Variation | 1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 Qxd5 5. d4 Nf6 |
| B70 | Dragon Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 |
| B45 | Four Knights Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 |
| B40 | Gaw-Paw Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Qb6 |
| B32 | Kalashnikov Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 |
| B41 | Kan Variation, Maróczy Bind, Hedgehog Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 g6 |
| B42 | Kan Variation, Polugaevsky Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 |
| B42 | Kan Variation, Swiss Cheese Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 g6 |
| B43 | Kan Variation, Wing Attack | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 |
| B56 | Kupreichik Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bd7 |
| B33 | Lasker-Pelikan Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 |
| B21 | McDonnell Attack | 1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. Bb5 Bg7 5. c3 Nf6 |
| B90 | Najdorf Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 |
| B32 | O'Kelly Variation, Maróczy Bind, Geller Line | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 a6 5. c4 e5 |
| B40 | Pin Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 |
| B80 | Scheveningen Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 |
| B21 | Smith-Morra Gambit Accepted, Fianchetto Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6 |
| B21 | Smith-Morra Gambit Accepted, Fianchetto Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 g6 |
| B21 | Smith-Morra Gambit Accepted, Kan Formation | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 a6 |
| B46 | Taimanov Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 |
| B47 | Taimanov Variation, Bastrikov Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 |
| B38 | Accelerated Dragon, Maróczy Bind | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 |
| B22 | Alapin Variation, Stoltz Attack | 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3 |
| B58 | Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 |
| B56 | Classical Variation, Fianchetto Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. g3 |
| B57 | Classical Variation, Sozin Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 |
| B25 | Closed | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 |
| B26 | Closed | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 |
| B72 | Dragon Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 |
| B70 | Dragon Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 |
| B70 | Dragon Variation, Fianchetto Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. g3 |
| B71 | Dragon Variation, Levenfish Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 |
| B45 | Four Knights Variation, Exchange Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Nxc6 |
| B23 | Grand Prix Attack, Schofman Variation | 1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. f5 |
| B40 | Kan Variation, Wing Attack, Fianchetto Variation | 1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 b5 5. d4 cxd4 6. Nxd4 |
| B33 | Lasker-Pelikan Variation, Exchange Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nxc6 |
| B33 | Lasker-Pelikan Variation, Retreat Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf3 |
| B33 | Lasker-Pelikan Variation, Schlechter Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 |
| B51 | Moscow Variation, Dorfman Gambit | 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Qe2 g6 6. e5 |
| B94 | Najdorf Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 |
| B90 | Najdorf Variation, Adams Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 |
| B93 | Najdorf Variation, Amsterdam Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 |
| B90 | Najdorf Variation, Dekker Gambit | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g4 |
| B90 | Najdorf Variation, English Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 |
| B90 | Najdorf Variation, Lipnitsky Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 |
| B92 | Najdorf Variation, Opocensky Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 |
| B90 | Najdorf Variation, Petronić Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Rg1 |
| B90 | Najdorf Variation, Yates Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 |
| B91 | Najdorf Variation, Zagreb Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 |
| B31 | Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Gufeld Gambit | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 e5 6. d4 |
| B31 | Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Lutikov Gambit | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. d4 |
| B31 | Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Totsky Attack | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Qa4 |
| B31 | Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. b4 |
| B40 | Pin Variation, Koch Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 |
| B55 | Prins Variation, Venice Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 e5 6. Bb5+ |
| B60 | Richter-Rauzer Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 |
| B83 | Scheveningen Variation, Classical Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 |
| B80 | Scheveningen Variation, Fianchetto Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 |
| B81 | Scheveningen Variation, Keres Attack | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 |
| B82 | Scheveningen Variation, Matanovic Attack | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 |
| B80 | Scheveningen Variation, Vitolins Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bb5+ |
| B86 | Sozin Attack | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 |
| B56 | Spielmann Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Nde2 |
| B48 | Taimanov Variation, Bastrikov Variation, English Attack | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 |
| B56 | Venice Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Bb5+ |
| B22 | Alapin Variation, Barmen Defense, Central Exchange | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4 |
| B58 | Boleslavsky Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 e5 |
| B57 | Classical Variation, Anti-Sozin Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 |
| B30 | Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 6. Nd2 Bg5 |
| B25 | Closed, Botvinnik Defense, with f4 | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 |
| B25 | Closed, Botvinnik Defense, with Nge2 | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nge2 e5 |
| B50 | Delayed Alapin Variation, Basman-Palatnik Gambit | 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 Nxe4 |
| B71 | Dragon Variation, Levenfish Variation, Main Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nbd7 |
| B45 | Four Knights Variation, Cobra Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bc5 |
| B45 | Four Knights Variation, Sveshnikov Transfer | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 d6 |
| B27 | Hyperaccelerated Pterodactyl, Exchange Variation | 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3 Qxc3+ |
| B95 | Najdorf Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 |
| B90 | Najdorf Variation, English Attack, Anti-English | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 |
| B29 | Nimzowitsch Variation, Main Line | 1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 e6 5. Nxd5 exd5 6. d4 Nc6 |
| B40 | Pin Variation, Jaffe Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 e5 |
| B62 | Richter-Rauzer Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 |
| B60 | Richter-Rauzer Variation, Dragon Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 g6 |
| B60 | Richter-Rauzer Variation, Modern Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 |
| B84 | Scheveningen Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 |
| B83 | Scheveningen Variation, Modern Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Be2 Nf6 |
| B21 | Smith-Morra Gambit Accepted, Fianchetto Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 g6 |
| B21 | Smith-Morra Gambit Accepted, Morphy Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bc5 |
| B21 | Smith-Morra Gambit Accepted, Paulsen Formation | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6 |
| B21 | Smith-Morra Gambit Accepted, Pin Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bb4 |
| B21 | Smith-Morra Gambit Accepted, Scheveningen Formation | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6 |
| B21 | Smith-Morra Gambit Accepted, Siberian Variation | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 |
| B21 | Smith-Morra Gambit Accepted, Taimanov Formation | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Bc4 a6 6. Nf3 Ne7 |
| B88 | Sozin Attack, Leonhardt Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 |
| B35 | Accelerated Dragon, Modern Bc4 Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 |
| B59 | Boleslavsky Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nb3 |
| B58 | Boleslavsky Variation, Louma Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nxc6 |
| B24 | Closed, Smyslov Variation | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 Nd4 7. Nce2 |
| B22 | Delayed Alapin Variation | 1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 exd5 5. Bb5+ Nc6 6. O-O Bd6 7. d4 |
| B72 | Dragon Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 |
| B75 | Dragon Variation, Yugoslav Attack, Early Deviations | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 |
| B45 | Four Knights Variation, American Attack | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. Nd6+ |
| B43 | Kan Variation, Knight Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. g3 Bb7 7. Bg2 |
| B43 | Kan Variation, Wing Attack, Spraggett Attack | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Qb6 7. Nf3 |
| B52 | Moscow Variation, Haag Gambit | 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4 |
| B96 | Najdorf Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 |
| B62 | Richter-Rauzer Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd3 |
| B62 | Richter-Rauzer Variation, Exchange Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Nxc6 |
| B61 | Richter-Rauzer Variation, Modern Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2 |
| B62 | Richter-Rauzer Variation, Podebrady Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Nb3 |
| B63 | Richter-Rauzer Variation, Traditional Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 |
| B62 | Richter-Rauzer Variation, Vitolins Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Bb5 |
| B90 | Scheveningen Variation, Delayed Keres Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 |
| B90 | Scheveningen Variation, English Attack, with f3 | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 |
| B80 | Scheveningen Variation, English Attack, with Qd2 | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Qd2 |
| B89 | Sozin Attack, Main Line | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 |
| B49 | Taimanov Variation, Bastrikov Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2 |
| B20 | Wing Gambit, Nanu Gambit | 1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. c4 Qe6 7. Bd3 |
| B39 | Accelerated Dragon, Maróczy Bind, Breyer Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 |
| B36 | Accelerated Dragon, Maróczy Bind, Gurgenidze Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6 |
| B37 | Accelerated Dragon, Simagin Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc2 d6 7. Be2 Nh6 |
| B58 | Classical Variation, Dragon Transfer | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 Nxd4 7. Qxd4 g6 |
| B25 | Closed, Botvinnik Defense, Edge Variation | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nh3 Nge7 |
| B72 | Dragon Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 |
| B35 | Dragon Variation, Modern Bc4 Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 d6 |
| B76 | Dragon Variation, Yugoslav Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O |
| B75 | Dragon Variation, Yugoslav Attack, Belezky Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 |
| B75 | Dragon Variation, Yugoslav Attack, Hungarian Dragon | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Nc6 7. f3 h5 |
| B42 | Kan Variation, Gipslis Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O d6 7. c4 g6 |
| B41 | Kan Variation, Maróczy Bind, Bronstein Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Bd3 Nc6 |
| B21 | McDonnell Attack | 1. e4 c5 2. f4 Nc6 3. Nf3 g6 4. Bb5 Bg7 5. Bxc6 bxc6 6. O-O d6 7. d3 Nf6 |
| B98 | Najdorf Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 |
| B96 | Najdorf Variation, Neo-Classical Defense | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 |
| B97 | Najdorf Variation, Poisoned Pawn Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 |
| B96 | Najdorf Variation, Polugaevsky Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 |
| B84 | Najdorf Variation, Scheveningen Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Nbd7 |
| B63 | Richter-Rauzer Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 |
| B63 | Richter-Rauzer Variation, Ivanov Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Qb6 |
| B66 | Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 |
| B84 | Scheveningen Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Qc7 |
| B21 | Smith-Morra Gambit Accepted, Chicago Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 e6 6. Bc4 Nf6 7. O-O a6 |
| B21 | Smith-Morra Gambit Accepted, Classical Formation | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 a6 7. O-O Nf6 |
| B87 | Sozin Attack, Flank Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 |
| B20 | Wing Gambit, Romanian Defense | 1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. Bb2 Nc6 7. c4 Qe6 |
| B22 | Alapin Variation, Barmen Defense, Milner-Barry Attack | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 cxd4 6. cxd4 e5 7. Nc3 Bb4 8. Be2 |
| B72 | Dragon Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 8. Nb3 |
| B73 | Dragon Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O Nc6 8. Be3 |
| B72 | Dragon Variation, Classical Variation, Amsterdam Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. Qd2 |
| B41 | Kan Variation, Maróczy Bind, Bronstein Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Bd3 Nc6 8. Bc2 |
| B43 | Kan Variation, Wing Attack, Christiansen's Dream | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Qb6 7. Be3 Bc5 8. Qg4 |
| B57 | Magnus Smith Trap | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 g6 7. Nxc6 bxc6 8. e5 |
| B90 | Najdorf Variation, English Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 |
| B90 | Najdorf Variation, English Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 |
| B90 | Najdorf Variation, English Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. h3 |
| B90 | Najdorf Variation, English Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. h3 |
| B92 | Najdorf Variation, Opocensky Variation | 1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. Be2 e5 7. Nb3 Be6 8. Be3 |
| B82 | Scheveningen Variation, Tal Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 Nc6 7. Be3 Be7 8. Qf3 |
| B47 | Taimanov Variation, Bastrikov Variation, Ponomariov Gambit | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Ndb5 Qb8 7. Be3 a6 8. Bb6 |
| B89 | Velimirovic Attack | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Be7 8. Qe2 |
| B22 | Alapin Variation, Stoltz Attack, Ivanchuk Line | 1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3 c4 7. Bc2 Qc7 8. Qe2 g5 |
| B76 | Dragon Variation, Yugoslav Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 |
| B33 | Lasker-Pelikan Variation, Bird Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 Be6 |
| B33 | Lasker-Pelikan Variation, Sveshnikov Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 |
| B92 | Najdorf Variation, Opocensky Variation, Modern Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O Be6 |
| B92 | Najdorf Variation, Opocensky Variation, Traditional Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O O-O |
| B98 | Najdorf Variation, Traditional Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 |
| B67 | Richter-Rauzer Variation, Neo-Modern Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 |
| B85 | Scheveningen Variation, Classical Variation, Paulsen Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e6 7. Be2 Qc7 8. O-O Nc6 |
| B21 | Smith-Morra Gambit Accepted, Finegold Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 d6 6. Bc4 a6 7. O-O Be7 8. Qe2 Nf6 |
| B21 | Smith-Morra Gambit Accepted, Larsen Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. Qe2 a6 8. O-O Bd6 |
| B21 | Smith-Morra Gambit Accepted, Morphy Defense Deferred | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6 7. O-O b5 8. Bb3 Bc5 |
| B21 | Smith-Morra Gambit Accepted, Siberian Variation, Siberian Trap | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. Qe2 Nf6 8. O-O Ng4 |
| B21 | Smith-Morra Gambit Accepted, Sozin Formation | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5 |
| B44 | Taimanov Variation, Gary Gambit | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 d5 |
| B50 | Delayed Alapin Variation, Basman-Palatnik Double Gambit | 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 Nxe4 7. d5 Qa5+ 8. Nc3 Nxc3 9. bxc3 |
| B73 | Dragon Variation, Classical Variation, Battery Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Qd2 |
| B72 | Dragon Variation, Classical Variation, Grigoriev Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. Qd2 O-O 9. O-O-O |
| B74 | Dragon Variation, Classical Variation, Normal Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 |
| B77 | Dragon Variation, Yugoslav Attack, Main Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 |
| B76 | Dragon Variation, Yugoslav Attack, Modern Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O |
| B76 | Dragon Variation, Yugoslav Attack, Panov Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. g4 |
| B33 | Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 |
| B51 | Moscow Variation, Moscow Gambit | 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. c3 Nf6 6. Re1 a6 7. Bxc6 Bxc6 8. d4 Bxe4 9. Bg5 |
| B64 | Richter-Rauzer Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 |
| B85 | Scheveningen Variation, Classical Variation, Paulsen Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 d6 9. f4 |
| B90 | Scheveningen Variation, Delayed Keres Attack, Perenyi Gambit | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 e5 8. Nf5 g6 9. g5 |
| B83 | Scheveningen Variation, Modern Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O O-O 8. f4 Nc6 9. Be3 |
| B88 | Sozin Attack, Fischer Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Bb3 Be7 8. Be3 O-O 9. f4 |
| B22 | Alapin Variation, Barmen Defense, Endgame Variation | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4 7. Nc3 Bxf3 8. gxf3 Qxd4 9. Qxd4 Nxd4 |
| B74 | Dragon Variation, Classical Variation, Alekhine Line | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 O-O 8. O-O d6 9. Nb3 a5 |
| B77 | Dragon Variation, Yugoslav Attack, Byrne Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 a5 |
| B77 | Dragon Variation, Yugoslav Attack, Main Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 |
| B77 | Dragon Variation, Yugoslav Attack, Sosonko Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Nd7 |
| B98 | Najdorf Variation, Browne Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 h6 9. Bh4 Qc7 |
| B98 | Najdorf Variation, Goteborg Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 h6 9. Bh4 g5 |
| B99 | Najdorf Variation, Main Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 |
| B97 | Najdorf Variation, Poisoned Pawn Accepted | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Rb1 Qa3 |
| B64 | Richter-Rauzer Variation, Classical Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 e5 |
| B68 | Richter-Rauzer Variation, Neo-Modern Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 |
| B65 | Richter-Rauzer Variation, Rauzer Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 Nxd4 |
| B21 | Smith-Morra Gambit Accepted, Chicago Defense | 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5 9. Bb3 Ra7 |
| B73 | Dragon Variation, Classical Variation, Zollner Gambit | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Be2 Nf6 7. Nc3 O-O 8. O-O d6 9. f4 Qb6 10. e5 |
| B78 | Dragon Variation, Yugoslav Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O |
| B77 | Dragon Variation, Yugoslav Attack, Main Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. Bb3 |
| B96 | Najdorf Variation, Polugaevsky Variation, Simagin Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5 dxe5 9. fxe5 Qc7 10. Qe2 |
| B65 | Richter-Rauzer Variation, Classical Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 Nxd4 10. Qxd4 |
| B85 | Scheveningen Variation, Classical Variation, Paulsen Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Kh1 Be7 9. f4 d6 10. a4 |
| B83 | Scheveningen Variation, Modern Variation | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. O-O O-O 8. f4 Nc6 9. Be3 Bd7 10. Nb3 |
| B74 | Dragon Variation, Classical Variation, Maróczy Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Na5 |
| B74 | Dragon Variation, Classical Variation, Tartakower Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Qc8 |
| B78 | Dragon Variation, Yugoslav Attack, Chinese Dragon | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Rb8 |
| B77 | Dragon Variation, Yugoslav Attack, Czerniak Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Nxd4 10. Bxd4 Be6 |
| B78 | Dragon Variation, Yugoslav Attack, Old Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Rc8 |
| B33 | Lasker-Pelikan Variation, Sveshnikov Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 |
| B33 | Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 Bg7 |
| B63 | Richter-Rauzer Variation, Classical Variation, Kantscher Line | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O Nxd4 9. Qxd4 a6 10. f4 b5 |
| B85 | Scheveningen Variation, Classical Main Line | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 Be7 9. f4 d6 10. Qe1 O-O |
| B89 | Sozin Attack, Main Line, Sherbakov Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Bb3 O-O 9. O-O Na5 10. f4 b6 |
| B44 | Taimanov Variation, Modern Line | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Be7 9. Be2 O-O 10. O-O b6 |
| B33 | Lasker-Pelikan Variation, Sveshnikov Variation, Peresypkin's Sacrifice | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bxb5 |
| B69 | Richter-Rauzer Variation, Neo-Modern Variation, Nyezhmetdinov Attack | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 10. Nf3 b5 11. Bxf6 |
| B77 | Dragon Variation, Yugoslav Attack, Czerniak Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Nxd4 10. Bxd4 Be6 11. Bb3 Qa5 |
| B74 | Dragon Variation, Classical Variation, Spielmann Variation | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 O-O 8. Nb3 d6 9. O-O Be6 10. f4 Na5 11. f5 Bc4 12. Bd3 |
| B79 | Dragon Variation, Yugoslav Attack | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. h4 Qa5 11. O-O-O Rfc8 12. Bb3 |
| B78 | Dragon Variation, Yugoslav Attack, Topalov Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Rc8 11. Bb3 Nxd4 12. Bxd4 |
| B94 | Najdorf Variation, Ivkov Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 Qa5 8. Qd2 e6 9. O-O-O b5 10. Bb3 Bb7 11. Rhe1 Nc5 12. e5 |
| B79 | Dragon Variation, Yugoslav Attack, Soltis Variation | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Qa5 11. h4 Rfc8 12. Bb3 h5 |
| B74 | Dragon Variation, Classical Variation, Bernard Defense | 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Na5 11. f5 Bc4 12. Bd3 Bxd3 13. cxd3 d5 |
| B74 | Dragon Variation, Classical Variation, Stockholm Attack | 1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. d4 cxd4 6. Nxd4 Bg7 7. Be3 Nf6 8. Be2 O-O 9. Nb3 Be6 10. O-O Na5 11. f5 Bc4 12. Nxa5 Bxe2 13. Qxe2 Qxa5 14. g4 |
How to learn an opening
Learn the ideas before the moves: where the pieces go, which pawn breaks matter and what the typical middlegame plans are. Then play it, and after each game look up the point where you or your opponent left the known moves. MentoChess shows that point automatically for every game you import.
Opening lessons: Three golden opening rules · Scholar’s mate and how to stop it · Italian Game: plans, not just moves · Answering 1.d4: the Queen’s Gambit Declined · Meeting the Sicilian with 2.c3 · From moves to structures