The Double Muzio 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. e5 Qxe5 8. Bxf7+, reaching the position shown below after 15 half-moves.
The four central squares are empty of pawns, so the fight for them is being conducted by pieces. White is ahead in development, with two minor pieces out to Black's zero, and Black is up three points of material. It is Black to move after eight moves. White has castled while Black’s king is still uncommitted; Black’s h- and f-files pawns are isolated; the e-file file is fully open.
On the King's Gambit Accepted generally: A romantic opening where White sacrifices a pawn for rapid development and attacking chances.
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The Double Muzio Gambit goes 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O gxf3 6. Qxf3 Qf6 7. e5 Qxe5 8. Bxf7+. It is a variation of the King's Gambit Accepted and is catalogued as ECO C37.
The Double Muzio 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. e5 Qxe5 8. Bxf7+ at -1.44 at depth 18, which is a small but real edge 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.
The four central squares are empty of pawns, so the fight for them is being conducted by pieces. White is ahead in development, with two 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’s h- and f-files pawns are isolated; the e-file file is fully open.