The Muzio Gambit, Holloway Defense 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 Nc6, reaching the position shown below after 12 half-moves.
White holds the centre with pawns on e4. Development is level at two minor pieces each, and Black is up three points of material. It is White to move after six 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.
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The Muzio Gambit, Holloway Defense goes 1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O gxf3 6. Qxf3 Nc6. It is a variation of the King's Gambit Accepted and is catalogued as ECO C37.
The Muzio Gambit, Holloway Defense 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 Nc6 at +0.78 at depth 18, which is a small but real edge for White. 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. Development is level at two minor pieces each, and Black is up three points of material. It is White 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.