Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. g3 Nc6 3. Bg2 Nf6 4. Nf3 Bf5 5. O-O Nb4 6. Na3 e6 7. c3 Nc6 8. Nc2
h5 9. Ne3 Be4 10. Nd2 Bxg2 11. Kxg2 h4 12. Nf3 h3+ 13. Kg1 Ne4 14. Qa4 Qd7 15.
Ng4 f6 16. Qb5 O-O-O 17. a4 e5 18. a5 a6 19. Ngxe5 fxe5 20. Qd3 Nxg3 21. fxg3
e4 22. Qe3 exf3 23. exf3 Re8 24. Qd3 Qe6 25. Bf4 Qe2 26. Qf5+ Kb8 27. Rae1 Qxe1
28. Rxe1 Rxe1+ 29. Kf2 Re8 30. Qf7 Bd6 31. Bxd6 cxd6 32. Qxd5 Kc7 33. Qf7+ Re7
34. Qb3 Rhe8 35. Qb6+ Kc8 36. g4 Re2+ 37. Kg3 Rh8 38. d5 g5 39. f4 Rg2+ 40. Kf3
Ne7 41. Qxd6 Ng8 42. Qe6+ Kb8 43. Qe5+ Ka7 44. Qxh8 Rxh2 45. Qxg8 Rxb2 46. Qh8
h2 47. c4 gxf4 48. Qd4+ Kb8 49. Qe5+ Ka7 50. Qd4+ Kb8 51. Qh8+ Ka7 52. Kxf4
Rf2+ 53. Ke5 Re2+ 54. Kd6 Rc2 55. g5 Rg2 56. Qh6 Kb8 57. g6 Rxg6+ 58. Qxg6 h1=Q
59. Qe8+ Ka7 60. Qd8 Qh2+ 61. Kc5 Qf2+ 62. Kd6 Qf4+ 63. Kc5 Qe3+ 64. Kd6 Qa3+
65. c5 Qg3+ 66. Kd7 Qg7+ 67. Kc8 Qg4+ 68. Qd7 Qg8+ 69. Qd8 Qg4+ 70. Qd7 Qb4 71.
Qd8 Qxc5+ 72. Qc7 Qxd5 *
Position (FEN): 2K5/kpQ5/p7/P2q4/8/8/8/8 w - - 0 73
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1656
Best move: Qb8#