E40

Keres Variation, Nimzo-Indian

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. Bd3 O-O 9. Ne2 b6

Opening moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. Bd3 O-O 9. Ne2 b6. This position is classified under ECO code E40.

Analyze

Use arrow keys to navigate

Analyze

Draw an opening to step through its moves here.

About This Opening

ECO Code

E40

Category Volume E

Opening Family

Nimzo-Indian Defense

Position (FEN)

rnbq1rk1/p4ppp/1p3n2/2pp4/3P4/P1PBP3/4NPPP/R1BQK2R w KQ - 0 10

Lichess Stats

Across 11 rapid and classical games on Lichess (1600+ rated), White wins 55%, Black wins 27%, and 18% end in a draw from this position. The most common continuation is O-O, played in 91% of games, followed by f3.

Observation period: 2026-07.

Small sample: 11 games. These percentages are descriptive and are too uncertain to compare opening strength.

55%

18%

27%

White wins 55% Draws 18% Black wins 27%

11 rapid and classical games on Lichess (1600+)

Top Continuations

O-O

Actions

Browse Repertoires Draw Another