B88

Sicilian Defense: Sozin Attack, Fischer Variation

Chess diagram: Sicilian Defense: Sozin Attack, Fischer Variation after 9. f4

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

3,372 games: White 54.4% / Draw 4.9% / Black 40.7%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
1,4271,427
521521
445445
277277
255255
130130
110110
102102

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 30, 2026

Engine evaluation

+0.13 The position is about equal

Best play: 9... Nxd4 10. Qxd4 Ng4 11. Bd2 Bd7 12. O-O-O Qb6 13. Qxb6 axb6 14. Rde1

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

Overview

Sicilian Defense: Sozin Attack, Fischer Variation (ECO B88, Semi-Open Games) is a variation of the Sicilian Defense: Sozin Attack, Leonhardt Variation, reached after 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Bb3 Be7 8. Be3 O-O 9. f4 (9 moves).

In 3,372 rated Lichess games between players rated 1600 to 2500, White won 54.4%, Black 40.7% and 4.9% were drawn. Black's most played move here is 9…a6, in 42% of those games.

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How to play against the Sicilian Defense: Sozin Attack, Fischer Variation

9…Nxd4 scores best for Black: 47.1%, with Black winning 45.1% and White 51.0% of 255 games. The most played answer, 9…a6, scores lowest: 41.1% in 1,427 games. Stockfish's first choice is also 9…Nxd4.

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

Cite this page

Caissa Codex. “Sicilian Defense: Sozin Attack, Fischer Variation (B88)”. Lichess data as of 30 Oct 2026. https://chesscodex.org/openings/sicilian-defense-sozin-attack-fischer-variation