Chess puzzle (Checkmate)
Moves: 1. e4 Nc6 2. Nf3 d5 3. exd5 Qxd5 4. Nc3 Qd6 5. Bb5 Bg4 6. O-O a6 7. Ba4 Qf4 8.
Nd5 Bxf3 9. Nxf4 Bxd1 10. Bxc6+ bxc6 11. Rxd1 e5 12. Re1 f6 13. d4 Bd6 14. dxe5
fxe5 15. Nd3 O-O-O 16. Bg5 Re8 17. c4 h6 18. Bh4 e4 19. c5 Nf6 20. Bxf6 exd3
21. Bxg7 Rxe1+ 22. Rxe1 Rh7 23. cxd6 Rxg7 24. Rd1 cxd6 25. Rxd3 Re7 26. Kf1 Kc7
27. Re3 Rf7 28. Re6 h5 29. h4 Rf5 30. Re7+ Kb6 31. Rg7 Rb5 32. b3 Ra5 33. a4
Rc5 34. Rg5 Rc1+ 35. Ke2 Rb1 36. Rg3 Ka5 37. f4 c5 38. f5 Rb2+ 39. Kf1 Rb1+ 40.
Kf2 Rb2+ 41. Kg1 c4 42. bxc4 Kxa4 43. f6 Rb8 44. f7 Rf8 45. Rf3 Kb4 46. Kf1
Kxc4 47. Ke2 a5 48. Kd2 a4 49. Kc2 d5 50. Rf4+ d4 51. Kb2 Kd3 52. Ka3 Kc4 53.
Kxa4 *
Position (FEN): 5r2/5P2/8/7p/K1kp1R1P/8/6P1/8 b - - 0 53
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1546
Best move: Ra8#