E03 — Catalan Opening: Open Defense
Indian Defences (E00–E99)
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4
Full page: Catalan Opening: Open Defense →ECO E03 covers Catalan Opening: Open Defense and related lines (Catalan Opening: Open Defense, Catalan Opening: Open Defense, Alekhine Variation). Main line 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 with variations, statistics, and the best responses.
2 lines under E03
Catalan Opening: Open Defense
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4
Catalan Opening: Open Defense, Alekhine Variation
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2