ECO E29: Nimzo-Indian Defense: Sämisch Variation

ECO E29 is part of volume E, Indian Defenses. The Lichess chess-openings dataset files 2 named lines under it. The shortest is Nimzo-Indian Defense: Sämisch Variation: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 O-O. All of them are lines of the Nimzo-Indian Defense: Sämisch Variation.

That position has come up in 16,376 Lichess games between players rated 1600 to 2500: White won 49.7%, 4.8% were drawn and Black won 45.4%.