Four Knights Game: Scotch Variation, Belgrade Gambit

The Four Knights Game: Scotch Variation, Belgrade Gambit is a chess opening classified under ECO code C47 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. Nc3 Nf6 4. d4 exd4 5. Nd5. The resulting position leaves black to move.