ECO B20
27 named openings and variations are classified as B20. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Sicilian DefenseB201. e4 c5
- Sicilian Defense: Amazon AttackB201. e4 c5 2. Qg4
- Sicilian Defense: Big Clamp FormationB201. e4 c5 2. d3 Nc6 3. c3 d6 4. f4
- Sicilian Defense: Bowdler AttackB201. e4 c5 2. Bc4
- Sicilian Defense: Brick VariationB201. e4 c5 2. Nh3
- Sicilian Defense: Czerniak AttackB201. e4 c5 2. b3
- Sicilian Defense: Czerniak Attack, Queen Fianchetto VariationB201. e4 c5 2. b3 b6
- Sicilian Defense: Euwe Attack, Prins GambitB201. e4 c5 2. b3 d5 3. Bb2
- Sicilian Defense: Gloria VariationB201. e4 c5 2. c4 d6 3. Nc3 Nc6 4. g3 h5
- Sicilian Defense: Grob VariationB201. e4 c5 2. g4
- Sicilian Defense: Keres VariationB201. e4 c5 2. Ne2
- Sicilian Defense: King David's OpeningB201. e4 c5 2. Ke2
- Sicilian Defense: Kronberger VariationB201. e4 c5 2. Na3
- Sicilian Defense: Kronberger Variation, Nemeth GambitB201. e4 c5 2. Na3 Nc6 3. d4 cxd4 4. Bc4
- Sicilian Defense: Lasker-Dunne AttackB201. e4 c5 2. g3
- Sicilian Defense: Mengarini VariationB201. e4 c5 2. a3
- Sicilian Defense: Myers Attack, with a4B201. e4 c5 2. a4
- Sicilian Defense: Myers Attack, with h4B201. e4 c5 2. h4
- Sicilian Defense: Staunton-Cochrane VariationB201. e4 c5 2. c4
- Sicilian Defense: Wing GambitB201. e4 c5 2. b4
- Sicilian Defense: Wing Gambit, Abrahams VariationB201. e4 c5 2. b4 cxb4 3. Bb2
- Sicilian Defense: Wing Gambit, Carlsbad VariationB201. e4 c5 2. b4 cxb4 3. a3 bxa3
- Sicilian Defense: Wing Gambit, Marienbad VariationB201. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Bb2
- Sicilian Defense: Wing Gambit, Marshall VariationB201. e4 c5 2. b4 cxb4 3. a3
- Sicilian Defense: Wing Gambit, Nanu GambitB201. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. c4 Qe6 7. Bd3
- Sicilian Defense: Wing Gambit, Romanian DefenseB201. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. Bb2 Nc6 7. c4 Qe6
- Sicilian Defense: Wing Gambit, Santasiere VariationB201. e4 c5 2. b4 cxb4 3. c4