ECO B90
11 named openings and variations are classified as B90. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.
- Sicilian Defense: Najdorf VariationB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
- Sicilian Defense: Najdorf Variation, Adams AttackB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3
- Sicilian Defense: Najdorf Variation, Dekker GambitB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g4
- Sicilian Defense: Najdorf Variation, English AttackB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3
- Sicilian Defense: Najdorf Variation, English Attack, Anti-EnglishB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4
- Sicilian Defense: Najdorf Variation, Lipnitsky AttackB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4
- Sicilian Defense: Najdorf Variation, Petronić AttackB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Rg1
- Sicilian Defense: Najdorf Variation, Yates VariationB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3
- Sicilian Defense: Scheveningen Variation, Delayed Keres AttackB901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4
- Sicilian Defense: Scheveningen Variation, Delayed Keres Attack, Perenyi GambitB901. 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
- Sicilian Defense: Scheveningen Variation, English Attack, with f3B901. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3