Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 e5 5. dxe5 Nxe5 6. e3 Be6 7. Nf3 Nxf3+ 8.
Qxf3 Bb4 9. Bd2 Ne4 10. O-O-O Nxd2 11. Rxd2 c6 12. a3 Bxc3 13. bxc3 Qa5 14. Kd1
Qxc3 15. Rd3 Qc4 16. Kd2 Bg4 17. Qf4 Qxf4 18. exf4 O-O 19. h3 Bf5 20. Rb3 Rab8
21. Re1 b5 22. Re5 Bd7 23. Re7 Rbd8 24. Rd3 Rfe8 25. Rxe8+ Bxe8 26. Re3 f6 27.
Re7 Bd7 28. c3 Kf8 29. Re3 Bf5 30. g4 Be4 31. Bxe4 dxe4+ 32. Kc2 Re8 33. Kb3 c5
34. a4 a6 35. axb5 axb5 36. f3 exf3 37. Rxf3 Re4 38. f5 Kf7 39. Rd3 Ke7 40. Rd5
Re5 41. Rd1 g6 42. fxg6 hxg6 43. h4 Re4 44. Rg1 Re3 45. h5 gxh5 46. gxh5 Rh3
47. Rg7+ Ke6 48. Rh7 b4 49. Kc2 Rxc3+ 50. Kb2 Rh3 51. h6 Kf5 52. Rc7 Rxh6 53.
Rxc5+ Ke6 54. Kb3 Rh4 55. Rc6+ Kf5 56. Rc5+ Kg6 57. Rc6 Kf5 58. Rc5+ Ke6 59.
Rb5 f5 60. Rb6+ Kf7 61. Rb5 Kg6 62. Rb6+ Kg5 63. Rb5 Re4 64. Rd5 Kg4 65. Rd1 f4
66. Rg1+ Kf3 67. Rf1+ Ke3 68. Re1+ Kf2 69. Rxe4 f3 70. Rxb4 Ke2 71. Re4+ Kf2
72. Kc3 Kg2 73. Rg4+ Kf2 74. Kd3 Ke1 75. Ke3 f2 76. Ra4 f1=Q *
Position (FEN): 8/8/8/8/R7/4K3/8/4kq2 w - - 0 77
White to move.
Themes:  Endgame, Queen and Rook Endgame Mate in 1 
Puzzle rating: 1274
Best move: Ra1#