Mate in 81

1. Kf1!! Bd3+! 2. Kg1!! Bb6+! 3. Kh1!! Be4! 4. Qh4 Bf2 5. Qh3+ Kf4+! 6. Kh2!! Bd4! 7. Qg3+ Kf5 8. Kh3! Bc5 9. Qc3 Bd6! 10. Kh4! Bf4 11. Qc8+! Ke5! 12. Qc5+ Ke6! 13. Kg4! Bd6! 14. Qd4! Bc6! 15. Qc3 Be4 16. Kg5! Kd5! 17. Kf6! Bf4! 18. Qa1 Bd3! 19. Qe1 Bd6! 20. Qe6+! Kc5! 21. Qe3+! Kc4! 22. Ke6! Ba3! 23. Qd2 Kd4! 24. Qf4+! Kc3! 25. Kd5! Bb2! 26. Qa4! Kd2! 27. Qa2! Kc2! 28. Kc6 Kc3! 29. Kc5! Be2! 30. Qa5+! Kc2! 31. Qa4+! Kd2! 32. Qf4+! Kc2! 33. Qh2! Kd3! 34. Qf2! Ba3+ 35. Kd5! Bb2! 36. Qg3+! Kd2! 37. Qb3 Bc3! 38. Ke4! Bd3+! 39. Kf3 Bd4! 40. Qb4+! Bc3! 41. Qa4! Bb1! 42. Kf2! Bc2! 43. Qc4! Bd3! 44. Qa2+! Bc2! 45. Kf3! Kd3! 46. Qa6+! Kd4! 47. Ke2! Bb4! 48. Qa7+! Bc5! 49. Qa1+! Kc4! 50. Qa2+! Bb3 Stalemate trap 50 moves rule 51. Qb1 Bb6! 52. Qb2! Bc5! 53. Qe5! Bc2 54. Kd2! Ba4! 55. Qc3+ Kb5! 56. Kd3! Kc6! 57. Qf6+! Bd6! 58. Kd4! Bb5! 59. Qf5! Ba6 60. Qc2+! Kb5 61. Kd5! Bb4! 62. Qc6+! Ka5 63. Kd4! Bf1 64. Qc7+! Ka6! 65. Kd5! Bd3! 66. Qe5! Bb5 67. Qa1+ Kb6! 68. Qd4+! Ka5! 69. Qa7+! Ba6 70. Kc6! Bf8! 71. Qb6+! Ka4 72. Qxa6+! Kb3 73. Qd3+ Kb4! 74. Qd4+ Ka3 75. Kb5! Bg7 76. Qd1 Kb2! 77. Kc4! Bc3 78. Qe2+ Bd2! 79. Qxd2+! Ka1 80. Kb3 Stalemate trap 80... Kb1 81. Qd1# Stalemate trap Mate 1-0