Chess puzzle (Checkmate)
Moves: 1. e4 Nf6 2. e5 Nd5 3. Nf3 d6 4. exd6 cxd6 5. Bc4 Nb6 6. c3 Nxc4 7. Qa4+ Nc6 8.
Qxc4 Bf5 9. O-O e6 10. d4 d5 11. Qe2 Bd6 12. Nbd2 O-O 13. b4 Rc8 14. Bb2 Qf6
15. a4 Ne7 16. Nb3 Ng6 17. Nc5 Nf4 18. Qd1 Rc7 19. a5 Bg4 20. a6 Nh3+ 21. Kh1
Ng5 22. Nxb7 Nxf3 23. Nxd6 Nxh2 24. Kxh2 Bxd1 25. Raxd1 Qf4+ 26. Kg1 Qxd6 27.
Ra1 Rc6 28. b5 Rb6 29. Ba3 Qb8 30. Bxf8 Kxf8 31. Rab1 Rxb5 32. Ra1 Qb6 33. g3
Ra5 34. Rab1 Qxa6 35. Kg2 Ra3 36. Rfc1 Qc4 37. Rb8+ Ke7 38. Rb7+ Kf6 39. Rb4
Qxc3 40. Rxc3 Rxc3 41. Ra4 Rc4 42. Rxa7 Rxd4 43. Ra3 e5 44. Ra6+ Kf5 45. Ra7 f6
46. Rxg7 e4 47. Rxh7 Rd2 48. Re7 d4 49. Kf1 Kg4 50. Rxe4+ Kf3 *
Position (FEN): 8/8/5p2/8/3pR3/5kP1/3r1P2/5K2 w - - 1 51
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 983
Best move: Rf4#