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1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.Bc4 g4 6.O-O gxf3 · ECO C25
Vienna Gambit, with Max Lange Defense: Hamppe-Muzio Gambit is a chess opening that arises after 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.Bc4 g4 6.O-O gxf3. It is classified C25 in the ECO system, and the position after these moves has white to move.
This line is a variation within the Vienna Gambit, with Max Lange Defense family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.Bc4 g4 6.O-O gxf3.
Each of these is a named opening reached by playing on from 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3 g5 5.Bc4 g4 6.O-O gxf3. Open any of them to load the position on the board.