Ponziani - Leonhardt variation
1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Qa4 Nf6
White advances 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 moves the c-pawn to c3. Black plays the queen's pawn to d5.
White places the queen to a4. Black moves the knight to f6.