The Double Muzio Gambit, Bello Gambit is a variation of the King's Gambit Accepted, catalogued as ECO C37. The line runs 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O gxf3 6. Qxf3 Qf6 7. Nc3, reaching the position shown below after 13 half-moves.
White holds the centre with pawns on e4. White is ahead in development, with three minor pieces out to Black's zero, and Black is up three points of material. It is Black to move after seven moves. White has castled while Black’s king is still uncommitted; Black has doubled pawns on the f-file; Black’s f- and h-files pawns are isolated.
On the King's Gambit Accepted generally: A romantic opening where White sacrifices a pawn for rapid development and attacking chances.
You can play through this variation move by move in your browser — Learn mode walks the line with an explanation at each step, and Drill mode replays it from memory so you find out whether you actually know it. No account is required.
See all 80 King's Gambit Accepted variations →
The Double Muzio Gambit, Bello Gambit goes 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O gxf3 6. Qxf3 Qf6 7. Nc3. It is a variation of the King's Gambit Accepted and is catalogued as ECO C37.
The Double Muzio Gambit, Bello Gambit is ECO C37. ECO codes group openings by their move order, so nearby codes cover closely related lines of the King's Gambit Accepted.
Stockfish evaluates the position after 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O gxf3 6. Qxf3 Qf6 7. Nc3 at -1.75 at depth 18, which is a clear advantage for Black. Engine evaluation is only a starting point — at club level the practical value of a line is mostly about whether you know its plans better than your opponent does.
White holds the centre with pawns on e4. White is ahead in development, with three minor pieces out to Black's zero, and Black is up three points of material. It is Black to move. White has castled while Black’s king is still uncommitted; Black has doubled pawns on the f-file; Black’s f- and h-files pawns are isolated.