Home › Openings › Catalan Opening › Catalan Opening: Open Defense Catalan Opening: Open Defense, Alekhine Variation ECO E03 · 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 Related variationsCatalan Opening: Open Defense, Classical LineCatalan Opening: Open Defense, Modern Sharp Variation Practice this opening · Play against the computer