Giuoco Piano - centre-holding variation
1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Qe7 5. d4 Bb6
White moves the king's pawn to e4. Black moves 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 c-pawn to c3. Black moves the queen to e7. White plays the queen's pawn to d4.
Black moves the dark-squared bishop to b6.