B90

Sicilian Defense: Najdorf Variation, Dekker Gambit

Chess diagram: Sicilian Defense: Najdorf Variation, Dekker Gambit after 6. g4

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

11,952 games: White 46.6% / Draw 3.3% / Black 50.1%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
6,4386,438
2,2842,284
1,0621,062
932932
327327
310310
241241
174174

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

Engine evaluation

−0.89 Black is better

Best play: 6... Bxg4 7. Be2 Bxe2 8. Qxe2 Nbd7 9. Bg5 Rc8 10. O-O-O Rxc3 11. bxc3

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

Overview

Sicilian Defense: Najdorf Variation, Dekker Gambit (ECO B90, Semi-Open Games) is a gambit in the Sicilian Defense: Najdorf Variation, reached after 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g4 (6 moves).

In 11,952 rated Lichess games between players rated 1600 to 2500, White won 46.6%, Black 50.1% and 3.3% were drawn. Black's most played move here is 6…Bxg4, in 54% of those games.

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How to play against the Sicilian Defense: Najdorf Variation, Dekker Gambit

The most played answer, 6…Bxg4, also scores best for Black: 54.8%, with Black winning 53.2% and White 43.6% of 6,438 games. Of the main answers, 6…e5 scores lowest: 46.4%. Stockfish's first choice is also 6…Bxg4.

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: Najdorf Variation, Dekker Gambit (B90)”. Lichess data as of 30 Oct 2026. https://chesscodex.org/openings/sicilian-defense-najdorf-variation-dekker-gambit