B03

Alekhine Defense: Four Pawns Attack, Korchnoi Variation

Chess diagram: Alekhine Defense: Four Pawns Attack, Korchnoi Variation after 10…f6

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

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Statistics from Lichess

833 games: White 42.5% / Draw 8.6% / Black 48.9%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
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Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 30, 2026

Engine evaluation

+0.83 White is better

Best play: 11. Be3 Nc6 12. exf6 Bxf6 13. Qd2 Qe7 14. Rad1 Rad8 15. Kh1 h6

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

Overview

Alekhine Defense: Four Pawns Attack, Korchnoi Variation (ECO B03, Semi-Open Games) is a variation of the Alekhine Defense: Four Pawns Attack, reached after 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Bf5 7. Nc3 e6 8. Nf3 Be7 9. Be2 O-O 10. O-O f6 (10 moves).

In 833 rated Lichess games between players rated 1600 to 2500, White won 42.5%, Black 48.9% and 8.6% were drawn. White's most played move here is 11. Be3, in 23% of those games.

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How to play against the Alekhine Defense: Four Pawns Attack, Korchnoi Variation

The most played answer, 11. Be3, also scores best for White: 50.5%, with White winning 46.6% and Black 45.5% of 191 games. Of the main answers, 11. Bf4 scores lowest: 42.4%. Stockfish's first choice is also 11. Be3.

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

Cite this page

Caissa Codex. “Alekhine Defense: Four Pawns Attack, Korchnoi Variation (B03)”. Lichess data as of 30 Oct 2026. https://chesscodex.org/openings/alekhine-defense-four-pawns-attack-korchnoi-variation