Sicilian Defense: Closed, Korchnoi Defense
1. e4 c5 2. Nc3 e6 3. g3 d5
4. exd5−0.01
The position is roughly equal. Stockfish 18, depth 18.
Analyze this positionIn the Sicilian Defense: Closed, Korchnoi Defense (B23), reached after 1. e4 c5 2. Nc3 e6 3. g3 d5, Stockfish 18 recommends 4. exd5 for White. The position is roughly equal (−0.01).
Top engine moves
- −0.014. exd5 exd5 5. d4 cxd4 6. Qxd4 Nf6 7. Bg5 Nc6 8. Bxf6 Nxd4
- −0.264. Bb5+ Nc6 5. Nf3 Nf6 6. d3 Be7 7. Bxc6+ bxc6 8. Qe2 O-O
- −0.344. d3 d4 5. Nce2 Be7 6. f4 b5 7. Bh3 a5 8. Nf3 Nc6
Frequently asked questions
What is the best move in the Sicilian Defense: Closed, Korchnoi Defense?
After 1. e4 c5 2. Nc3 e6 3. g3 d5, Stockfish 18 at depth 18 recommends 4. exd5 for White, continuing exd5 5. d4 cxd4 6. Qxd4 Nf6 7. Bg5 Nc6 8. Bxf6 Nxd4. The position is roughly equal (−0.01). The next best moves are 4. Bb5+ (−0.26) and 4. d3 (−0.34).
Is the Sicilian Defense: Closed, Korchnoi Defense a good opening?
Stockfish rates the position at −0.01: 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, Korchnoi Defense?
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+).