Chess puzzle (Checkmate)
Moves: 1. b3 b6 2. Bb2 Bb7 3. f4 Nf6 4. e3 g6 5. Nf3 Bg7 6. g3 O-O 7. Bg2 e5 8. Bxe5
d6 9. Bb2 Nbd7 10. O-O a5 11. a4 Re8 12. Re1 Nc5 13. d3 d5 14. Nbd2 Qd6 15. Ne5
Ncd7 16. Nxd7 Qxd7 17. Nf3 Ng4 18. Bxg7 Kxg7 19. Qd2 Qd6 20. h3 Nf6 21. Ne5 Nd7
22. Nxd7 Qxd7 23. Rad1 Rad8 24. Kh2 Qd6 25. Qf2 Qc5 26. Kg1 Qc3 27. Qd2 Qc5 28.
Kh2 f5 29. Qf2 Re7 30. Re2 Rde8 31. Rde1 Re6 32. Bf3 R8e7 33. g4 fxg4 34. hxg4
Qd6 35. Kg2 c5 36. Qg3 Qc7 37. f5 Qxg3+ 38. Kxg3 gxf5 39. gxf5 Re5 40. Kf4 Kf6
41. e4 dxe4 42. Bxe4 Bc8 43. Rh1 Bxf5 44. Rh6+ Bg6 45. Rf2 Kg7 46. Rhh2 Bxe4
47. dxe4 Rxe4+ 48. Kg3 Re3+ 49. Kg2 Re2 50. Kf1 Rxf2+ 51. Rxf2 Rf7 52. Kg2
Rxf2+ 53. Kxf2 Kf6 54. Kf3 Ke5 55. Ke3 h6 56. c3 h5 57. Kf3 Kf5 58. Ke3 Kg4 59.
Ke4 h4 60. Kd5 h3 61. Kc6 h2 62. Kxb6 h1=Q 63. Kxa5 Qc6 64. b4 cxb4 65. cxb4
Kf5 66. b5 Qc3+ 67. Ka6 Qb4 68. a5 Qc4 69. Kb6 Ke6 70. a6 Kd6 71. a7 Qc5+ 72.
Ka6 Kc7 73. a8=Q *
Position (FEN): Q7/2k5/K7/1Pq5/8/8/8/8 b - - 0 73
Black to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1255
Best move: Qb6#