Code ECO B53 – Sicilian Defense
Coups: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4
└── B53 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 - Sicilian Defense: Chekhover Variation (6) ├── B53 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 - Sicilian Defense: Chekhover Variation (2) │ └── B53 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 - Sicilian Defense: Chekhover Variation (2) │ └── B53 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Qd7 - Sicilian Defense: Chekhover Variation, Zaitsev Defense (0) └── B53 - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nf6 - Sicilian Defense: Chekhover Variation (4)

