ECO B23 · Sicilian Defense

Sicilian Defense: Closed, Carlsen Variation

1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2

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

5… g6+0.08

The position is roughly equal. Stockfish 18, depth 18.

Analyze this position

In the Sicilian Defense: Closed, Carlsen Variation (B23), reached after 1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2, Stockfish 18 recommends 5… g6 for Black. The position is roughly equal (+0.08).

Top engine moves

  1. +0.085… g6 6. h3 Bg7 7. Nf3 Nf6 8. Be2 Be6 9. O-O d5 10. Ng5
  2. +0.205… e6 6. b3 Nf6 7. Bb2 d5 8. exd5 exd5 9. O-O-O Be6 10. Bd3
  3. +0.245… Nf6 6. b3 e6 7. Bb2 d5 8. exd5 exd5 9. O-O-O Be6 10. Bd3

Frequently asked questions

What is the best move in the Sicilian Defense: Closed, Carlsen Variation?
After 1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2, Stockfish 18 at depth 18 recommends 5… g6 for Black, continuing 6. h3 Bg7 7. Nf3 Nf6 8. Be2 Be6 9. O-O d5 10. Ng5. The position is roughly equal (+0.08). The next best moves are 5… e6 (+0.20) and 5… Nf6 (+0.24).
Is the Sicilian Defense: Closed, Carlsen Variation a good opening?
Stockfish rates the position at +0.08: the position is roughly equal. 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: Closed, Carlsen Variation?
B23. 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+).