ECO B12 · Caro-Kann Defense

Caro-Kann Defense: Advance Variation, Bayonet Attack

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4

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

4… Be4+0.20

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

Analyze this position

In the Caro-Kann Defense: Advance Variation, Bayonet Attack (B12), reached after 1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4, Stockfish 18 recommends 4… Be4 for Black. The position is roughly equal (+0.20).

Top engine moves

  1. +0.204… Be4 5. f3 Bg6 6. Ne2 e6 7. h4 h5 8. Nf4 Ne7 9. Nc3
  2. +0.374… Bd7 5. Be3 h5 6. gxh5 Bf5 7. Bd3 Bxd3 8. Qxd3 e6 9. Nf3
  3. +0.374… Bg6 5. Ne2 e6 6. Nbc3 c5 7. h4 h5 8. Nf4 Bh7 9. Nxh5

Frequently asked questions

What is the best move in the Caro-Kann Defense: Advance Variation, Bayonet Attack?
After 1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4, Stockfish 18 at depth 18 recommends 4… Be4 for Black, continuing 5. f3 Bg6 6. Ne2 e6 7. h4 h5 8. Nf4 Ne7 9. Nc3. The position is roughly equal (+0.20). The next best moves are 4… Bd7 (+0.37) and 4… Bg6 (+0.37).
Is the Caro-Kann Defense: Advance Variation, Bayonet Attack a good opening?
Stockfish rates the position at +0.20: 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 Caro-Kann Defense: Advance Variation, Bayonet Attack?
B12. 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+).