C39

King's Gambit Accepted: Kieseritzky, Polerio Defense

Chess diagram: King's Gambit Accepted: Kieseritzky, Polerio Defense after 5…Be7

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Statistics from Lichess

9,566 games: White 48.4% / Draw 3.4% / Black 48.2%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
3,4303,430
3,1573,157
2,5412,541
148148
121121
7575
6464
1717

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 31, 2026

Engine evaluation

+1.20 White is better

Best play: 6. Bc4 Nh6 7. d4 d6 8. Nd3 f3 9. gxf3 Bxh4+ 10. Kf1 Ng8

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

Overview

King's Gambit Accepted: Kieseritzky, Polerio Defense (ECO C39, Open Games) is a gambit in the King's Gambit Accepted: Kieseritzky Gambit, reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Be7 (5 moves).

In 9,566 rated Lichess games between players rated 1600 to 2500, White won 48.4%, Black 48.2% and 3.4% were drawn. White's most played move here is 6. Qxg4, in 36% of those games.

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How to play against the King's Gambit Accepted: Kieseritzky, Polerio Defense

The most played answer, 6. Qxg4, also scores best for White: 54.0%, with White winning 52.5% and Black 44.5% of 3,430 games. Of the main answers, 6. Nxg4 scores lowest: 44.3%. Stockfish's first choice is 6. Bc4.

Main answers: those played in at least 5% of these games. Score: White's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Cite this page

Caissa Codex. “King's Gambit Accepted: Kieseritzky, Polerio Defense (C39)”. Lichess data as of 31 Oct 2026. https://chesscodex.org/openings/kings-gambit-accepted-kieseritzky-polerio-defense