E43

Nimzo-Indian Defense: St. Petersburg Variation 5…Ne4 6. Qc2

Chess diagram: Nimzo-Indian Defense: St. Petersburg Variation after 6. Qc2

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Statistics from Lichess

6,080 games: White 46.2% / Draw 5.2% / Black 48.6%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
3,7593,759
1,0511,051
703703
403403
112112
2424
77
55

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 13, 2026

Engine evaluation

+0.17 The position is about equal

Best play: 6... f5 7. Bd3 Bb7 8. O-O Bxc3 9. bxc3 O-O 10. Nd2 Nxd2 11. Bxd2

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

Overview

Nimzo-Indian Defense: St. Petersburg Variation (ECO E43, Indian Defenses) is a variation of the Nimzo-Indian Defense: Three Knights Variation, reached after 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Ne4 6. Qc2 (6 moves).

In 6,080 rated Lichess games between players rated 1600 to 2500, White won 46.2%, Black 48.6% and 5.2% were drawn. Black's most played move here is 6…Bb7, in 62% of those games.

It continues into one named variation.

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How to answer 6. Qc2

6…Bxc3+ scores best for Black: 54.6%, with Black winning 51.8% and White 42.5% of 703 games. The most played, 6…Bb7, scores 52.5% in 3,759 games, and 6…Nxc3 scores lowest: 42.1%. Stockfish's first choice is 6…f5.

Main answers: those played in at least 5% of these games. Score: Black's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Variations (1)

Cite this page

Caissa Codex. “Nimzo-Indian Defense: St. Petersburg Variation (E43)”. Lichess data as of 13 Oct 2026. https://chesscodex.org/openings/nimzo-indian-defense-st-petersburg-variation-3