E21 is the opening Nimzo-Indian Defense: Three Knights Variation of the volume E · Indian defences: 7 half-moves to the position in the diagram, 4 variations in the ECO table.
What the games say
1,712 games in the collections, from 1887 to 2022. Mean rating of the games with ratings: 2496.
White wins 35 %, draws 37 %, Black wins 29 %
Most games: Edouard,R (36), Mamedyarov,S (33), Moiseenko,A1 (31), Barsov, Alexei (25), Vitiugov,N (19)
All 4 variations
- Nimzo-Indian Defense: Three Knights Variation 1.d4 ♘f6 2.c4 e6 3.♘c3 ♗b4 4.♘f3
- Nimzo-Indian Defense: Three Knights Variation, Euwe Variation 1.d4 ♘f6 2.c4 e6 3.♘c3 ♗b4 4.♘f3 c5 5.d5 ♘e4
- Nimzo-Indian Defense: Three Knights Variation, Korchnoi Variation 1.d4 ♘f6 2.c4 e6 3.♘c3 ♗b4 4.♘f3 c5 5.d5
- Nimzo-Indian Defense: Three Knights Variation, Shocron Gambit 1.d4 ♘f6 2.c4 e6 3.♘f3 ♗b4+ 4.♘c3 c5 5.d5 b5