Chess puzzle (Checkmate)
Moves: 1. e4 c6 2. f4 d5 3. e5 e6 4. Nf3 h6 5. Bd3 Be7 6. O-O g5 7. Nd4 Bc5 8. c3 Ne7
9. Kh1 Nd7 10. f5 Bxd4 11. cxd4 Nxf5 12. Bxf5 exf5 13. Rxf5 Nc5 14. Rf1 Nd3 15.
Qh5 Be6 16. Nc3 Nxc1 17. Raxc1 Qe7 18. Rf6 O-O-O 19. Rcf1 Rdf8 20. Na4 b6 21.
Qe2 Kb7 22. b4 Rfg8 23. a3 Rg6 24. Nc3 Rxf6 25. Rxf6 a6 26. Na4 Qe8 27. Nc3 Qf8
28. Na2 h5 29. Qd3 Rh6 30. Rxh6 Qxh6 31. a4 Qg6 32. Qc3 Qb1+ 33. Nc1 Qe4 34. h3
g4 35. hxg4 Qe1+ 36. Kh2 Bxg4 37. Nd3 Qh4+ 38. Kg1 Bf5 39. b5 axb5 40. axb5
Bxd3 41. bxc6+ Kc7 42. Qxd3 Kxc6 43. Qc3+ Kb7 44. Qb4 Qe1+ 45. Kh2 h4 46. Qe7+
Ka6 47. Qxf7 Qg3+ 48. Kg1 h3 49. Qf3 h2+ 50. Kh1 Qe1+ 51. Kxh2 Qxd2 52. e6 Qh6+
53. Qh3 Qf4+ 54. Kh1 Qf1+ 55. Kh2 Qf4+ 56. Qg3 Qh6+ 57. Qh3 Qf4+ 58. Kg1 Qc1+
59. Kf2 Qd2+ 60. Kf3 Qd3+ 61. Kg4 Qxd4+ 62. Kf5 Qe4+ 63. Kf6 Qd4+ 64. Ke7 Qg7+
65. Kd6 d4 66. e7 Qg6+ 67. Qe6 Qe8 68. Qc4+ Kb7 69. Qd5+ Ka6 70. Qxd4 Qb8+ 71.
Kd7 Qb7+ 72. Ke6 Qc6+ 73. Qd6 Qe4+ 74. Kd7 Qb7+ 75. Qc7 Qd5+ 76. Ke8 Qg8+ 77.
Kd7 Qd5+ 78. Qd6 Qb7+ 79. Ke6 Qe4+ 80. Kf7 Qh7+ 81. Ke8 Qg8+ 82. Kd7 Qg4+ 83.
Kc7 Qc4+ 84. Kb8 Qg8+ 85. Qd8 Qg3+ 86. Ka8 Qxg2+ 87. Kb8 *
Position (FEN): 1K1Q4/4P3/kp6/8/8/8/6q1/8 b - - 1 87
Black to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1066
Best move: Qb7#