Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Qb6 8. Na4
Qa5+ 9. c3 cxd4 10. b4 Qc7 11. Nxd4 a6 12. Qd2 Be7 13. Be2 O-O 14. O-O b5 15.
Nb2 Nb6 16. a4 Nc4 17. Nxc4 bxc4 18. Nxc6 Qxc6 19. Bd4 Bd7 20. Bd1 a5 21. b5
Qc7 22. Bc2 Bc5 23. Rad1 Rac8 24. Rb1 Bxd4+ 25. Qxd4 Qc5 26. Rfd1 Qxd4+ 27.
Rxd4 Rb8 28. f5 Rfc8 29. Kf2 Rc5 30. g4 f6 31. exf6 gxf6 32. fxe6 Bxe6 33. Kg3
Kg7 34. Re1 Rb6 35. h4 h6 36. Kf4 Rc7 37. Bf5 Bf7 38. Rd2 Kf8 39. Rde2 Rbb7 40.
Be6 Re7 41. Bxf7 Rxe2 42. Rxe2 Kxf7 43. Kf5 Rb6 44. Rd2 Rd6 45. Rd4 Rd7 46. b6
Rb7 47. Rxd5 Rxb6 48. Rd7+ Ke8 49. Ra7 Rb3 50. Ke6 Rxc3 *
Position (FEN): 4k3/R7/4Kp1p/p7/P1p3PP/2r5/8/8 w - - 0 51
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1367
Best move: Ra8#