ECO D11 · Slav Defense

Slav Defense: Breyer Variation

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nbd2

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

4… Bf5+0.08

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

Analyze this position

In the Slav Defense: Breyer Variation (D11), reached after 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nbd2, Stockfish 18 recommends 4… Bf5 for Black. The position is roughly equal (+0.08).

Top engine moves

  1. +0.084… Bf5 5. e3 e6 6. Be2 Nbd7 7. c5 Be7 8. O-O O-O 9. Nh4
  2. +0.204… g6 5. g3 Bg7 6. Bg2 O-O 7. O-O a5 8. b3 Bf5 9. Nh4
  3. +0.254… h6 5. Qc2 g6 6. e3 Bf5 7. Bd3 Bxd3 8. Qxd3 Bg7 9. O-O

Frequently asked questions

What is the best move in the Slav Defense: Breyer Variation?
After 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nbd2, Stockfish 18 at depth 18 recommends 4… Bf5 for Black, continuing 5. e3 e6 6. Be2 Nbd7 7. c5 Be7 8. O-O O-O 9. Nh4. The position is roughly equal (+0.08). The next best moves are 4… g6 (+0.20) and 4… h6 (+0.25).
Is the Slav Defense: Breyer 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 Slav Defense: Breyer Variation?
D11. 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+).