Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f4 O-O 8. e5
Ne8 9. Qd3 d6 10. Nxc6 bxc6 11. O-O-O Bg4 12. Be2 Bxe2 13. Nxe2 Qa5 14. Kb1 Rb8
15. Bd4 dxe5 16. fxe5 Bxe5 17. Bxe5 Qxe5 18. Nc3 Nd6 19. Rhe1 Qf6 20. g4 Nb5
21. Nxb5 Rxb5 22. b3 Rfb8 23. Qd7 Qc3 24. Qd3 Qc5 25. Qd4 Qa3 26. Qb2 Qxb2+ 27.
Kxb2 e6 28. Rd7 a5 29. Red1 Rg5 30. h3 a4 31. Rc7 axb3 32. axb3 h5 33. Rdd7 Rf8
34. gxh5 Rxh5 35. Rxc6 Rxh3 36. b4 Rh5 37. Kb3 g5 38. Rc5 Rh3+ 39. c3 f6 40.
Rcc7 g4 41. Rg7+ Kh8 42. Rxg4 f5 43. Rg6 f4 44. Rxe6 f3 45. Re1 f2 46. Rf1 Re3
47. Ra7 Rc8 48. Rxf2 Rcxc3+ 49. Kb2 Rb3+ 50. Kc2 Rec3+ 51. Kd2 Rd3+ 52. Ke2
Re3+ 53. Kf1 Rxb4 *
Position (FEN): 7k/R7/8/8/1r6/4r3/5R2/5K2 w - - 0 54
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 639
Best move: Rf8#