King's Gambit Accepted: Allgaier, Horny Defense

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 h6 6. Nxf7 Kxf7 7. Qxg4 Nf6 8. Qxf4 Bd6

King's Gambit Accepted: Allgaier, Horny Defense after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 h6 6. Nxf7 Kxf7 7. Qxg4 Nf6 8. Qxf4 Bd6 87654321abcdefgh

The King's Gambit Accepted: Allgaier, Horny Defense is a chess opening classified as ECO C39, reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 h6 6. Nxf7 Kxf7 7. Qxg4 Nf6 8. Qxf4 Bd6. It is a line of the King's Gambit Accepted. White is to move.

In 12.6 million rated Lichess games (blitz and slower), this position was reached 29 times by this move order. White won 10%, 4% were drawn and Black won 86%. The most popular continuation is 9. e5 (62% of games).

Engine evaluation: −2.24 (Stockfish, depth 42; best line 9. Qe3 Nxe4 10. Qf3+ Nf6 11. d4 Qe7+)

ECO
C39
Moves
16 plies
FEN
rnbq3r/pppp1k2/3b1n1p/8/4PQ1P/8/PPPP2P1/RNB1KB1R w KQ - 1 9
PGN
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 h6 6. Nxf7 Kxf7 7. Qxg4 Nf6 8. Qxf4 Bd6

Analyse with Stockfish · Board image (SVG) · Open on Lichess

Results by rating

Average ratingGamesWhite / draw / Black
0-14996100%
1500-19991817%78%
2000+5100%
All2986%

Most played moves

MoveGamesWhite / draw / Black
9. e518 (62%)17%78%
9. Bc4+6 (21%)100%
9. Qf33 (10%)100%
9. Qe31 (3%)100%
9. Qf51 (3%)100%

Master games

1 over-the-board game is classified under this line (White 0%, draw 100%, Black 0%). The strongest:

Search all games of the King's Gambit Accepted: Allgaier, Horny Defense and its sub-variations

Highest-rated Lichess games

Comes from

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

More King's Gambit Accepted lines (all)

Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.