Vienna Gambit, with Max Lange Defense: Quelle Gambit

The Vienna Gambit, with Max Lange Defense: Quelle Gambit is a chess opening classified under ECO code C25 in the Open Games & French Defense family, beginning with 1.e4 e5 or 1.e4 e6, including the Italian Game, Ruy Lopez, and French Defense. It is reached after 4 moves: 1. e4 e5 2. Nc3 Nc6 3. f4 Bc5 4. fxe5 d6. The resulting position leaves white to move.