Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 O-O 5. e3 c5 6. Nf3 cxd4 7. exd4 Nc6 8.
Bd3 d5 9. c5 Nxd4 10. Nxd4 Bxc5 11. Nb3 Bd6 12. O-O a6 13. Qf3 b5 14. a3 Bb7
15. Nc1 Qc7 16. h3 d4 17. Ne4 Nxe4 18. Bxe4 Bxe4 19. Qxe4 Rad8 20. Nd3 f5 21.
Qxe6+ Kh8 22. Rac1 Qb6 23. Rfe1 Rf6 24. Qe2 Rg6 25. Qf3 Qb8 26. Bf4 Bxf4 27.
Qxf4 Qxf4 28. Nxf4 Rgd6 29. Rcd1 g5 30. Nd3 Kg7 31. Re5 Kf6 32. Rde1 h5 33. g3
Rc8 34. Nb4 d3 35. Nxd3 Rxd3 36. Re6+ Kf7 37. Rxa6 Rb3 38. Ra7+ Kf6 39. Ra6+
Kf7 40. a4 Rxb2 41. a5 Rcc2 42. Ra7+ Kf6 43. Rf1 Ra2 44. a6 Ke5 45. Ra8 Ke4 46.
a7 Kf3 47. h4 gxh4 48. gxh4 Rxf2 49. Rf8 Rxf1+ 50. Kxf1 Rxa7 51. Rxf5+ Kg4 52.
Rxb5 Kxh4 53. Kg2 Ra2+ 54. Kh1 Kg3 55. Rxh5 *
Position (FEN): 8/8/8/7R/8/6k1/r7/7K b - - 0 55
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 949
Best move: Ra1#