King's Gambit Accepted: Allgaier Gambit

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

King's Gambit Accepted: Allgaier Gambit after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5 87654321abcdefgh

The King's Gambit Accepted: Allgaier Gambit is a chess opening classified as ECO C39, reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5. It is a line of the King's Gambit Accepted. Black is to move. 2 named lines continue from this position.

In 12.6 million rated Lichess games (blitz and slower), this position was reached 650 times by this move order. White won 54%, 1% were drawn and Black won 45%. The most popular continuation is 5… h6 (48% of games).

Engine evaluation: −2.00 (Stockfish, depth 30; best line 5… h6 6. Nxf7 Kxf7 7. Qxg4 Nf6 8. Qxf4)

ECO
C39
Moves
9 plies
FEN
rnbqkbnr/pppp1p1p/8/6N1/4PppP/8/PPPP2P1/RNBQKB1R b KQkq - 1 5
PGN
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ng5

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

Results by rating

Average ratingGamesWhite / draw / Black
0-14996754%46%
1500-199947354%44%
2000+11052%46%
All65054%45%

Most played moves

MoveGamesWhite / draw / Black
5… h6311 (48%)50%48%
5… h5110 (17%)58%41%
5… f660 (9%)58%42%
5… d552 (8%)52%46%
5… d651 (8%)55%45%
5… Be718 (3%)61%33%
5… Nh611 (2%)55%45%
5… Nf6
Allgaier, Schlechter Defense
11 (2%)55%36%

Master games

11 over-the-board games are classified under this line (White 55%, draw 9%, Black 36%). The strongest:

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

Highest-rated Lichess games

Comes from

King's Gambit Accepted: King's Knight's Gambit (3… g5 4. h4) 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4

Continuations

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.