1. e4 e5 2. Nf3 d6 3. Bc4 f5 4. d4 Nf6 5. Nc3 exd4 6. Qxd4 Bd7 7. Ng5 (Diagram) 7... Nc6 allows a forced mate with 7... Qe7 holds 8. Bf7+ Ke7 9. Qxf6+ Kxf6 10. Nd5+ Ke5 11. Nf3+ Kxe4 12. Nc3# *