ECO C37 · King's Gambit Accepted

King's Gambit Accepted: Rosentreter Gambit, Testa Variation

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bxf4

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

5… gxf3−1.04

Black is clearly better. Stockfish 18, depth 18.

Analyze this position

In the King's Gambit Accepted: Rosentreter Gambit, Testa Variation (C37), reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bxf4, Stockfish 18 recommends 5… gxf3 for Black. Black is clearly better (−1.04).

Top engine moves

  1. −1.045… gxf3 6. Qxf3 Nc6 7. Bc4 Qf6 8. e5 Qg6 9. Bd3 Qg7 10. c3
  2. +0.965… Nf6 6. Nfd2 d5 7. Nc3 Nh5 8. Be5 f6 9. Bxc7 Qxc7 10. Nxd5
  3. +1.195… Nc6 6. Ne5 Bh6 7. Bxh6 Qh4+ 8. g3 Qxh6 9. Nxg4 Qg7 10. c3

Frequently asked questions

What is the best move in the King's Gambit Accepted: Rosentreter Gambit, Testa Variation?
After 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bxf4, Stockfish 18 at depth 18 recommends 5… gxf3 for Black, continuing 6. Qxf3 Nc6 7. Bc4 Qf6 8. e5 Qg6 9. Bd3 Qg7 10. c3. Black is clearly better (−1.04). The next best moves are 5… Nf6 (+0.96) and 5… Nc6 (+1.19).
Is the King's Gambit Accepted: Rosentreter Gambit, Testa Variation a good opening?
Stockfish rates the position at −1.04: black is clearly 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 King's Gambit Accepted: Rosentreter Gambit, Testa Variation?
C37. ECO codes classify chess openings from A00 to E99; C is the volume for open games and the French Defense.

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