ECO D31 · Semi-Slav Defense

Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation, Belyavsky Line

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. Bg5 f6

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

6. Bd2+0.48

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation, Belyavsky Line (D31), reached after 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. Bg5 f6, Stockfish 18 recommends 6. Bd2 for White. White is slightly better (+0.48).

Top engine moves

  1. +0.486. Bd2 b5 7. e4 a5 8. a4 b4 9. Nb1 Ba6 10. Qc2 f5
  2. +0.336. Bf4 b5 7. a4 Bb4 8. e4 Ne7 9. Be2 a5 10. O-O Ba6
  3. +0.116. Bc1 b5 7. e4 Bb4 8. Be2 Ne7 9. a3 Ba5 10. O-O O-O

Frequently asked questions

What is the best move in the Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation, Belyavsky Line?
After 1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. Bg5 f6, Stockfish 18 at depth 18 recommends 6. Bd2 for White, continuing b5 7. e4 a5 8. a4 b4 9. Nb1 Ba6 10. Qc2 f5. White is slightly better (+0.48). The next best moves are 6. Bf4 (+0.33) and 6. Bc1 (+0.11).
Is the Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation, Belyavsky Line a good opening?
Stockfish rates the position at +0.48: white 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 Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Variation, Belyavsky Line?
D31. ECO codes classify chess openings from A00 to E99; D is the volume for closed and semi-closed games.

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