Italian Game: Scotch Gambit, de Riviere Defense

The Italian Game: Scotch Gambit, de Riviere Defense is a chess opening classified under ECO code C56 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. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. O-O Be7. The resulting position leaves white to move.