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ECO E20: Nimzo-Indian Defense

ECO E20 is part of volume E, Indian Defenses. The Lichess chess-openings dataset files 7 named lines under it. The shortest is Nimzo-Indian Defense: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4.

That position has come up in 11,649,058 Lichess games between players rated 1600 to 2500: White won 48.2%, 5.5% were drawn and Black won 46.3%.

OpeningMovesGamesLength
Nimzo-Indian Defense 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 11.6M 3 moves
Nimzo-Indian Defense: Dilworth Gambit 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e4 122K 4 moves
Nimzo-Indian Defense: Kmoch Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 610K 4 moves
Nimzo-Indian Defense: Mikenas Attack 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qd3 28K 4 moves
Nimzo-Indian Defense: Romanishin Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 162K 4 moves
Nimzo-Indian Defense: Romanishin Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 O-O 6. Bg2 22K 6 moves
Nimzo-Indian Defense: Romanishin Variation, English Hybrid 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. g3 cxd4 6. Nxd4 O-O 7. Bg2 d5 8. cxd5 Nxd5 2,870 8 moves