ECO B15 · Caro-Kann Defense

Caro-Kann Defense: Rasa-Studier Gambit

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. f3

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

4… exf3−0.62

Black is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Caro-Kann Defense: Rasa-Studier Gambit (B15), reached after 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. f3, Stockfish 18 recommends 4… exf3 for Black. Black is slightly better (−0.62).

Top engine moves

  1. −0.624… exf3 5. Nxf3 Nf6 6. Bc4 Bf5 7. Ne5 e6 8. g4 Bg6 9. h4
  2. −0.254… Nf6 5. Nxe4 Nbd7 6. Qd3 g6 7. Bd2 Bg7 8. O-O-O b5 9. h4
  3. −0.024… e5 5. dxe5 Qxd1+ 6. Nxd1 Nd7 7. Bf4 exf3 8. Nxf3 Ne7 9. Ne3

Frequently asked questions

What is the best move in the Caro-Kann Defense: Rasa-Studier Gambit?
After 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. f3, Stockfish 18 at depth 18 recommends 4… exf3 for Black, continuing 5. Nxf3 Nf6 6. Bc4 Bf5 7. Ne5 e6 8. g4 Bg6 9. h4. Black is slightly better (−0.62). The next best moves are 4… Nf6 (−0.25) and 4… e5 (−0.02).
Is the Caro-Kann Defense: Rasa-Studier Gambit a good opening?
Stockfish rates the position at −0.62: black 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 Caro-Kann Defense: Rasa-Studier Gambit?
B15. 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+).