Catalan Opening: Open Defense (E04)
Coups: 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3
├── E04 - 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 a6 - Catalan Opening: Open Defense (3) ├── E04 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bd7 - Catalan Opening: Open Defense (1) ├── E04 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 - Catalan Opening: Open Defense (4) ├── E04 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c6 - Catalan Opening: Open Defense (2) ├── E04 - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Nc6 - Catalan Opening: Open Defense (3) └── E04 - 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5. Bg2 Bb4+ - Catalan Opening: Open Defense (4)
