ECO D10 · Slav Defense

Slav Defense: Exchange Variation, Boor Attack

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. f3

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

5… Qb6−0.14

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

Analyze this position

In the Slav Defense: Exchange Variation, Boor Attack (D10), reached after 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. f3, Stockfish 18 recommends 5… Qb6 for Black. The position is roughly equal (−0.14).

Top engine moves

  1. −0.145… Qb6 6. e3 Nc6 7. Bd2 Bd7 8. Qb3 Qxb3 9. axb3 e6 10. Bd3
  2. 0.005… Nc6 6. e4 dxe4 7. d5 Ne5 8. fxe4 e6 9. Nf3 Nxf3+ 10. Qxf3
  3. +0.175… Bf5 6. g4 Bd7 7. e4 e6 8. g5 Nh5 9. f4 g6 10. Be2

Frequently asked questions

What is the best move in the Slav Defense: Exchange Variation, Boor Attack?
After 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. f3, Stockfish 18 at depth 18 recommends 5… Qb6 for Black, continuing 6. e3 Nc6 7. Bd2 Bd7 8. Qb3 Qxb3 9. axb3 e6 10. Bd3. The position is roughly equal (−0.14). The next best moves are 5… Nc6 (0.00) and 5… Bf5 (+0.17).
Is the Slav Defense: Exchange Variation, Boor Attack a good opening?
Stockfish rates the position at −0.14: 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: Exchange Variation, Boor Attack?
D10. 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+).