Scotch gambit
1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bb4+ 5. c3 dxc3 6. bxc3
White pushes the king's pawn to e4. Black advances the king's pawn to e5. White develops the knight to f3.
Black develops the knight to c6. White advances the queen's pawn to d4. Black captures on d4 with the king's pawn.
White develops the light-squared bishop to c4. Black develops the dark-squared bishop to b4, giving check. White plays the c-pawn to c3.
Black captures on c3 with the queen's pawn. White captures on c3 with the b-pawn.