Mate in 13

1. Ke2+!! Kh2! 2. Qb8+! Kg1 3. Qb6+! Kh2! 4. Qd6+! Kh3! 5. Qh6+!! Kg2 6. Qg5+ Kh3! 7. Qh5+! Kg3! 8. Qxh1! Kf4 9. Qd5! Kg4! 10. Qe5 Kh3! 11. Qg5 Kh2 12. Kf2 Kh1 13. Qg1# Mate 1-0