Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nc3 d5 3. Bf4 c5 4. e3 e6 5. Nb5 Na6 6. c3 Be7 7. Bd3 O-O 8. Nf3
Nh5 9. Bg3 Bd7 10. a4 Nxg3 11. hxg3 f5 12. g4 Nc7 13. Ne5 Be8 14. gxf5 exf5 15.
g4 cxd4 16. Nxd4 Qd6 17. Nef3 g6 18. gxf5 g5 19. Kd2 Bf6 20. Qg1 Qe7 21. Ne6
Nxe6 22. fxe6 Bg6 23. Bxg6 hxg6 24. Nd4 Bxd4 25. cxd4 Qb4+ 26. Kc2 Rac8+ 27.
Kb1 Qb3 28. Qd1 Qb4 29. Rh2 Rc6 30. Ra3 Rxe6 31. Qd3 Qd6 32. Rg2 Ref6 33. Rxg5
R8f7 34. f4 Re6 35. Rc3 Kg7 36. Rc1 Rfe7 37. Rg3 Qb4 38. Rcg1 Kf7 39. Rxg6 Rxe3
40. Rg7+ Ke8 41. Qg6+ Kd7 42. Qf5+ Kc7 43. Rxe7+ Qxe7 44. Rc1+ Kb6 45. Qxd5
Qe4+ 46. Qxe4 Rxe4 47. Rf1 Rxd4 48. f5 Rd7 49. f6 Rf7 50. Ka2 Kc5 51. Kb3 b6
52. Kc3 a5 53. Rf5+ Kc6 54. Kc4 Kb7 55. Kb5 Kc7 56. Ka6 Kc6 57. b3 Rf8 58. f7 *
Position (FEN): 5r2/5P2/Kpk5/p4R2/P7/1P6/8/8 b - - 0 58
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1543
Best move: Ra8#