ECO B90 · Sicilian Defense

Sicilian Defense: Najdorf Variation, Dekker Gambit

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g4

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Black to move. The arrow shows Stockfish’s best move.
Best move

6… Bxg4−0.41

Black is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Sicilian Defense: Najdorf Variation, Dekker Gambit (B90), reached after 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g4, Stockfish 18 recommends 6… Bxg4 for Black. Black is slightly better (−0.41).

Top engine moves

  1. −0.416… Bxg4 7. Be2 h5 8. Bg5 Nc6 9. Bxf6 gxf6 10. Bxg4 hxg4 11. Nxc6
  2. −0.226… Nxg4 7. Be2 Nf6 8. Bg5 Nbd7 9. Qd2 h6 10. Bh4 g5 11. Bg3
  3. 0.006… d5 7. exd5 Bxg4 8. Qd3 Nxd5 9. Qe4 Nxc3 10. Qxg4 h5 11. Qh4

Frequently asked questions

What is the best move in the Sicilian Defense: Najdorf Variation, Dekker Gambit?
After 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g4, Stockfish 18 at depth 18 recommends 6… Bxg4 for Black, continuing 7. Be2 h5 8. Bg5 Nc6 9. Bxf6 gxf6 10. Bxg4 hxg4 11. Nxc6. Black is slightly better (−0.41). The next best moves are 6… Nxg4 (−0.22) and 6… d5 (0.00).
Is the Sicilian Defense: Najdorf Variation, Dekker Gambit a good opening?
Stockfish rates the position at −0.41: black is slightly better. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the Sicilian Defense: Najdorf Variation, Dekker Gambit?
B90. ECO codes classify chess openings from A00 to E99; B is the volume for semi-open games (other than the French).

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).