About this opening
Vienna Gambit, with Max Lange Defense: Hamppe-Muzio Gambit is an opening in the Encyclopedia of Chess Openings,
classified under code C25. ECO group C (C00–C99)
covers open games (1.e4 e5) and the French Defence, including the Ruy Lopez, Italian, Scotch and King's Gambit. This particular variation is reached
after 12 half-moves from the
starting position, with the move sequence 1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. Bc4 g4 6. O-O gxf3.
It belongs to the Vienna Gambit, with Max Lange Defense family. Within that family this is a sub-variation (the Hamppe-Muzio Gambit line).
The opening sequence in prose form: 1.e4 e5, 2.Nc3 Nc6, 3.f4 exf4, 4.Nf3 g5, 5.Bc4 g4, 6.O-O gxf3. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.