Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 d5 5. Bf4 O-O 6. e3 c5 7. Rc1 Nc6 8. Bd3
cxd4 9. exd4 dxc4 10. Bxc4 Nd5 11. Bxd5 exd5 12. O-O Bg4 13. Qd3 Bd6 14. Bg5 f6
15. Bh4 Bf4 16. Rcd1 Re8 17. h3 Bh5 18. Qb5 Qd7 19. Qxd5+ Qxd5 20. Nxd5 Bd6 21.
Nc3 Bxf3 22. gxf3 a6 23. Kg2 Ne7 24. Bg3 Nf5 25. Ne4 Bf8 26. d5 Rad8 27. Rd2 h5
28. h4 Kf7 29. Rc1 Rd7 30. a3 Red8 31. Rcd1 Bd6 32. Bxd6 Nxd6 33. Nc5 Nf5 34.
Nxd7 Rxd7 35. b4 Nxh4+ 36. Kg3 Nf5+ 37. Kf4 Nd6 38. Rc2 g5+ 39. Kg3 Kg6 40. Re1
Nf5+ 41. Kg2 Rxd5 42. Rc7 b5 43. Rc6 h4 44. Ree6 Kh5 45. Rxf6 g4 46. fxg4+ Kxg4
47. Rg6+ Kf4 48. Rxa6 Rd3 49. Raf6 h3+ 50. Kh2 Rf3 51. Rh6 Rxf2+ 52. Kxh3 Rf3+
53. Kg2 Rxa3 54. Rxf5+ Kxf5 55. Rh5+ Kg4 56. Rxb5 Ra2+ 57. Kf1 Kf3 58. Ke1 Ke3
59. Kd1 Rb2 60. Kc1 Rb3 61. Kc2 Rd3 62. Rb8 Rd5 63. Kc3 Rd7 64. Kc4 Rc7+ 65.
Kb3 Kd4 66. Ka4 Kc4 67. b5 *
Position (FEN): 1R6/2r5/8/1P6/K1k5/8/8/8 b - - 0 67
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 709
Best move: Ra7#