Win, despite a blunder

1. e4 e5 2. Nf3 d6 3. d4 { Philidor Defence, General } Bg4 4. dxe5 Bxf3 5. gxf3 Nc6 6. exd6 Bxd6 7. Bb5 Qf6 8. Qe2 Qg6 9. Nc3 Qg2 10. Rf1 Bxh2 11. Be3 Bg1 12. O-O-O Bh2 13. Nd5 Bd6 14. Qc4 a6 15. Bxc6+ bxc6 16. Qxc6+ Kd8 17. Qxa8+ Kd7 18. Nf4 Qxf3 19. e5 Qxa8 20. exd6 c6 21. Bd4 f6 22. Rfe1 Nh6 23. Bb6 Nf5 24. Ne6 h5 25. Nc5+ Kc8 26. d7+ Kb8 27. Re8+ Rxe8 28. dxe8=Q# { Black is checkmated } 1-0