ECO C39 · King's Gambit Accepted

King's Gambit Accepted: Kieseritzky, Polerio Defense

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Be7

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

6. Bc4+0.59

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the King's Gambit Accepted: Kieseritzky, Polerio Defense (C39), reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Be7, Stockfish 18 recommends 6. Bc4 for White. White is slightly better (+0.59).

Top engine moves

  1. +0.596. Bc4 Nh6 7. d4 Bxh4+ 8. Kf1 Bg5 9. Nc3 d6 10. Nd3 Be6
  2. −0.436. Nxg4 Bxh4+ 7. Nf2 Nc6 8. d4 Qg5 9. Nc3 d6 10. Qd2 Bg3
  3. −1.046. Be2 Bxh4+ 7. Kf1 h5 8. Bc4 Rh7 9. d4 d6 10. Nd3 f3

Frequently asked questions

What is the best move in the King's Gambit Accepted: Kieseritzky, Polerio Defense?
After 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Be7, Stockfish 18 at depth 18 recommends 6. Bc4 for White, continuing Nh6 7. d4 Bxh4+ 8. Kf1 Bg5 9. Nc3 d6 10. Nd3 Be6. White is slightly better (+0.59). The next best moves are 6. Nxg4 (−0.43) and 6. Be2 (−1.04).
Is the King's Gambit Accepted: Kieseritzky, Polerio Defense a good opening?
Stockfish rates the position at +0.59: white 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 King's Gambit Accepted: Kieseritzky, Polerio Defense?
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+).