Ponziani - Steinitz variation
1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Qa4 f6
White pushes 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 plays the c-pawn to c3. Black pushes the queen's pawn to d5.
White moves the queen to a4. Black plays the f-pawn to f6.