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ECO E37: Nimzo-Indian Defense

ECO E37 is part of volume E — Indian Defenses. The Lichess chess-openings dataset files 3 named lines under it. The shortest is Nimzo-Indian Defense: Classical Variation, Noa Variation: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2.

That position has come up in 17,561 Lichess games between players rated 1600 to 2500: White won 50.2%, 6.0% were drawn and Black won 43.8%.

OpeningMovesPlies
Nimzo-Indian Defense: Classical Variation, Noa Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 13
Nimzo-Indian Defense: Classical Variation, Modern Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 c5 14
Nimzo-Indian Defense: Classical Variation, Noa Variation, San Remo Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Ne4 7. Qc2 Nc6 8. e3 e5 16