Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. Qe2 d5 3. exd5 Nf6 4. dxe6 Bxe6 5. Nf3 Nc6 6. Ng5 Nd4 7. Nxe6 Nxe6
8. c3 c6 9. d4 Bd6 10. Be3 O-O 11. Nd2 c5 12. dxc5 Bxc5 13. O-O-O Bxe3 14. Qxe3
Qa5 15. Kb1 Rfe8 16. Nb3 Qh5 17. Be2 Qg6+ 18. Bd3 Qxg2 19. Rdg1 Qc6 20. Qg3
Rad8 21. Bf5 g6 22. h4 Qd5 23. Bxe6 Rxe6 24. Nd4 Re5 25. f4 Re4 26. f5 Rxd4 27.
cxd4 Ne4 28. Qe5 Nd2+ 29. Ka1 Qc6 30. fxg6 hxg6 31. h5 Nf3 32. Qa5 b6 33. Qxa7
Nxg1 34. Rxg1 Rxd4 35. hxg6 fxg6 36. Qb8+ Kg7 37. Qe5+ Qf6 38. Qc7+ Qf7 39.
Qxb6 Qf6 40. Qxf6+ Kxf6 41. b3 g5 42. a4 Rd8 43. Kb2 Rg8 44. a5 Ke6 45. Ka3 Kd6
46. Ka4 Kc6 47. b4 g4 48. b5+ Kb7 49. Rg3 Rg5 50. Kb4 Kc7 51. Kc4 Kb7 52. Kb4
Ka7 53. Ka4 Rg7 54. Kb4 Kb7 55. a6+ Kb6 56. Kc4 Rg5 57. Re3 g3 58. Re6+ Ka5 59.
a7 Rg4+ 60. Kc5 Rg5+ 61. Kc6 Rg8 62. Kb7 g2 63. Re1 Rg7+ 64. Kb8 Rg8+ 65. Kb7
Rg7+ 66. Kc6 Kb4 67. b6 Rg6+ 68. Kb7 g1=Q 69. Rxg1 Rxg1 70. a8=Q Rg7+ 71. Ka6
Rg5 72. Qb7 *
Position (FEN): 8/1Q6/KP6/6r1/1k6/8/8/8 b - - 4 72
Black to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 833
Best move: Ra5#