ECO volume E: Indian defenses

ECO E44

2 named openings and variations are classified as E44. ECO (Encyclopaedia of Chess Openings) codes group openings from A00 to E99 by their opening moves.

Nimzo-Indian Defense: St. Petersburg Variation, American VariationE441. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 Ne4
Nimzo-Indian Defense: St. Petersburg Variation, Romanishin-Psakhis VariationE441. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 c5 6. a3 Ba5