ECO volume E: Indian defenses

ECO E25

2 named openings and variations are classified as E25. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.

Nimzo-Indian Defense: Sämisch Variation, Keres VariationE251. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5
Nimzo-Indian Defense: Sämisch Variation, Romanovsky VariationE251. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. dxc5 f5