King's Gambit Accepted: Muzio Gambit, Brentano Defense

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O d5

King's Gambit Accepted: Muzio Gambit, Brentano Defense after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O d5 87654321abcdefgh

The King's Gambit Accepted: Muzio Gambit, Brentano Defense is a chess opening classified as ECO C37, reached after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O d5. 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 5 times by this move order. White won 20%, 0% were drawn and Black won 80%. The most popular continuation is 6. Bxd5 (80% of games).

Engine evaluation: −0.31 (Stockfish, depth 34; best line 6. exd5 gxf3 7. Qxf3 Bd6 8. d4 Ne7)

ECO
C37
Moves
10 plies
FEN
rnbqkbnr/ppp2p1p/8/3p4/2B1Ppp1/5N2/PPPP2PP/RNBQ1RK1 w kq - 0 6
PGN
1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O d5

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

Results by rating

Average ratingGamesWhite / draw / Black
0-14991100%
1500-19993100%
2000+1100%
All520%80%

Most played moves

MoveGamesWhite / draw / Black
6. Bxd54 (80%)25%75%
6. exd51 (20%)100%

Master games

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

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

Highest-rated Lichess games

Comes from

King's Gambit Accepted: Muzio Gambit, Wild Muzio Gambit 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O

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.