Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Nf6 5. d4 a6 6. Be3 Bg4 7. h3 Bh5 8. g4
Bg6 9. g5 Ne4 10. Nxe4 Bxe4 11. Bg2 Nc6 12. c4 O-O-O 13. d5 Nb4 14. Nd4 Bxg2
15. Qg4+ Kb8 16. Qxg2 Nd3+ 17. Ke2 Nc5 18. Nf5 Qd7 19. Bxc5 Qxf5 20. Rhe1 e6
21. Bxf8 Rhxf8 22. Kf1 Qd3+ 23. Kg1 Qxc4 24. dxe6 fxe6 25. Re3 Rd2 26. Rb3 c6
27. Qg3+ Qf4 28. Kh1 Qxg3 29. fxg3 Rff2 30. Re3 Rh2+ 31. Kg1 Rdg2+ 32. Kf1 Rc2
33. Kg1 Rxh3 34. b3 Rhh2 35. a3 Rcg2+ 36. Kf1 Rf2+ 37. Kg1 Rb2 38. b4 Rhg2+ 39.
Kh1 Kc7 40. Rxe6 Rxg3 41. Re7+ Kb6 42. Rxg7 Rh3+ 43. Kg1 Rhh2 44. Rc1 Rbg2+ 45.
Kf1 Ra2 46. Kg1 Rhg2+ 47. Kh1 Rh2+ 48. Kg1 a5 49. bxa5+ Kxa5 50. Rxb7 Rhg2+ 51.
Kh1 Rh2+ 52. Kg1 Rag2+ 53. Kf1 Rxg5 54. Rxc6 Rb5 *
Position (FEN): 8/1R5p/2R5/kr6/8/P7/7r/5K2 w - - 1 55
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1456
Best move: Ra7#