Vienna Game: Vienna Gambit, Breyer Variation

The Vienna Game: Vienna Gambit, Breyer Variation is a chess opening classified under ECO code C29 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 5 moves: 1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Be7. The resulting position leaves white to move.