ECO E52: Nimzo-Indian Defense: Normal Variation

ECO E52 is part of volume E, Indian Defenses. The Lichess chess-openings dataset files 2 named lines under it. The shortest is Nimzo-Indian Defense: Normal Variation, Schlechter Defense: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6. All of them are lines of the Nimzo-Indian Defense: Normal Variation. The most played is Nimzo-Indian Defense: Normal Variation, Schlechter Defense, reached in 43,478 rated Lichess games.

That position has come up in 37,400 Lichess games between players rated 1600 to 2500: White won 48.8%, 5.7% were drawn and Black won 45.5%.