B20 — Sicilian Defense
Semi-Open Games incl. Sicilian (B00–B99)
1. e4 c5
Full page: Sicilian Defense →ECO B20 covers Sicilian Defense and related lines (Sicilian Defense, Sicilian Defense: Amazon Attack, Sicilian Defense: Bowdler Attack, Sicilian Defense: Brick Variation). Main line 1. e4 c5 with variations, statistics, and the best responses.
27 lines under B20
Sicilian Defense
1. e4 c5
Sicilian Defense: Amazon Attack
1. e4 c5 2. Qg4
Sicilian Defense: Bowdler Attack
1. e4 c5 2. Bc4
Sicilian Defense: Brick Variation
1. e4 c5 2. Nh3
Sicilian Defense: Czerniak Attack
1. e4 c5 2. b3
Sicilian Defense: Grob Variation
1. e4 c5 2. g4
Sicilian Defense: Keres Variation
1. e4 c5 2. Ne2
Sicilian Defense: King David's Opening
1. e4 c5 2. Ke2
Sicilian Defense: Kronberger Variation
1. e4 c5 2. Na3
Sicilian Defense: Lasker-Dunne Attack
1. e4 c5 2. g3
Sicilian Defense: Mengarini Variation
1. e4 c5 2. a3
Sicilian Defense: Myers Attack, with a4
1. e4 c5 2. a4
Sicilian Defense: Myers Attack, with h4
1. e4 c5 2. h4
Sicilian Defense: Staunton-Cochrane Variation
1. e4 c5 2. c4
Sicilian Defense: Wing Gambit
1. e4 c5 2. b4
Sicilian Defense: Czerniak Attack, Queen Fianchetto Variation
1. e4 c5 2. b3 b6
Sicilian Defense: Euwe Attack, Prins Gambit
1. e4 c5 2. b3 d5 3. Bb2
Sicilian Defense: Wing Gambit, Abrahams Variation
1. e4 c5 2. b4 cxb4 3. Bb2
Sicilian Defense: Wing Gambit, Marshall Variation
1. e4 c5 2. b4 cxb4 3. a3
Sicilian Defense: Wing Gambit, Santasiere Variation
1. e4 c5 2. b4 cxb4 3. c4
Sicilian Defense: Wing Gambit, Carlsbad Variation
1. e4 c5 2. b4 cxb4 3. a3 bxa3
Sicilian Defense: Big Clamp Formation
1. e4 c5 2. d3 Nc6 3. c3 d6 4. f4
Sicilian Defense: Kronberger Variation, Nemeth Gambit
1. e4 c5 2. Na3 Nc6 3. d4 cxd4 4. Bc4
Sicilian Defense: Gloria Variation
1. e4 c5 2. c4 d6 3. Nc3 Nc6 4. g3 h5
Sicilian Defense: Wing Gambit, Marienbad Variation
1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Bb2
Sicilian Defense: Wing Gambit, Nanu Gambit
1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. c4 Qe6 7. Bd3
Sicilian Defense: 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
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