Boden-Kieseritsky gambit
1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Nf3
White plays the king's pawn to e4. Black advances the king's pawn to e5. White develops the knight to c3.
Black develops the knight to f6. White develops the light-squared bishop to c4. Black captures with the knight on e4.
White jumps the knight to f3.