Evans gambit
1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. O-O d6
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 develops the light-squared bishop to c4. Black develops the dark-squared bishop to c5.
White advances the b-pawn to b4. Black captures with the dark-squared bishop on b4. White plays the c-pawn to c3.
Black places the dark-squared bishop to a5. White castles kingside. Black plays the queen's pawn to d6.