Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nc3 Nf6 3. Bg5 e6 4. Nf3 Bd6 5. Qd2 a6 6. Ne5 O-O 7. f4 c5 8. e3
Nc6 9. Bd3 cxd4 10. exd4 Nb4 11. a3 Nxd3+ 12. Qxd3 h6 13. Bh4 Be7 14. g4 Nd7
15. Bxe7 Qxe7 16. O-O-O b5 17. g5 hxg5 18. Rhg1 gxf4 19. Ne2 Bb7 20. Nxf4 Nb6
21. Qg3 Qf6 22. Nh5 Qh6+ 23. Kb1 g6 24. Nf4 Kg7 25. Nexg6 fxg6 26. Nxe6+ Kh7
27. Qc7+ Kg8 28. Qxb7 Nc4 29. Nxf8 Rxf8 30. Qxd5+ Kh7 31. Qd7+ Kg8 32. Qe6+ Kh7
33. Qe7+ Kg8 34. Qe6+ Kh7 35. Rg3 Kg7 36. Rdg1 Rf6 37. Qe7+ Rf7 38. Qg5 Rf6 39.
Qxh6+ Kxh6 40. Rh3+ Kg7 41. Rhg3 Nd2+ 42. Ka2 Ne4 43. Re3 Nd6 44. Re7+ Kh6 45.
Ra7 Nf5 46. d5 Ne3 47. Rg3 Nxd5 48. Rh3+ Kg5 49. Rd3 Nf4 50. Rg3+ Kh4 51. Kb3
g5 52. a4 bxa4+ 53. Kxa4 Kh5 54. b4 Kg6 55. c4 Ne2 56. Re3 Nd4 57. Ra8 Nc2 58.
Re7 Ne1 59. Rxe1 Rc6 60. Rae8 Rxc4 61. R8e6+ Kh5 62. Rxa6 Rh4 63. Ka5 Rxh2 64.
b5 Rb2 65. Rh1+ Kg4 66. b6 Kg3 67. Rg1+ Kf2 68. Rxg5 Ke3 69. Rg7 Kd4 70. b7 Kc5
71. Ra8 *
Position (FEN): R7/1P4R1/8/K1k5/8/8/1r6/8 b - - 2 71
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1375
Best move: Ra2#