ECO C39 · King's Gambit Accepted

King's Gambit Accepted: Kieseritzky Gambit, Cotter Gambit

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 h6 6. Nxf7

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

6… Kxf7−0.97

Black is clearly better. Stockfish 18, depth 18.

Analyze this position

In the King's Gambit Accepted: Kieseritzky Gambit, Cotter Gambit (C39), reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 h6 6. Nxf7, Stockfish 18 recommends 6… Kxf7 for Black. Black is clearly better (−0.97).

Top engine moves

  1. −0.976… Kxf7 7. d4 Nf6 8. Bxf4 d5 9. Nc3 Kg7 10. Nxd5 Bd6 11. Bc4
  2. +2.246… Qf6 7. Nxh8 f3 8. gxf3 gxf3 9. d4 f2+ 10. Ke2 Nc6 11. e5
  3. +3.066… Qe7 7. Nxh8 d5 8. Qe2 f3 9. gxf3 Nc6 10. Ng6 gxf3 11. Qxf3

Frequently asked questions

What is the best move in the King's Gambit Accepted: Kieseritzky Gambit, Cotter Gambit?
After 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 h6 6. Nxf7, Stockfish 18 at depth 18 recommends 6… Kxf7 for Black, continuing 7. d4 Nf6 8. Bxf4 d5 9. Nc3 Kg7 10. Nxd5 Bd6 11. Bc4. Black is clearly better (−0.97). The next best moves are 6… Qf6 (+2.24) and 6… Qe7 (+3.06).
Is the King's Gambit Accepted: Kieseritzky Gambit, Cotter Gambit a good opening?
Stockfish rates the position at −0.97: 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: Kieseritzky Gambit, Cotter Gambit?
C39. 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+).