Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nc3 e6 3. e4 c5 4. dxc5 Bxc5 5. Bg5 Be7 6. Bd3 O-O 7. Nf3 d6 8.
O-O Nc6 9. Ne2 a6 10. Ng3 e5 11. Nf5 Bxf5 12. exf5 h6 13. Bh4 Re8 14. Bc4 d5
15. Bxf6 dxc4 16. Bxe5 Nxe5 17. Nxe5 b5 18. Qxd8 Raxd8 19. Nc6 Rc8 20. Nxe7+
Rxe7 21. Rad1 Re2 22. f6 gxf6 23. Rd6 Rxc2 24. Rxf6 Kg7 25. Rxa6 Rxb2 26. a4
bxa4 27. Rxa4 c3 28. h4 c2 29. Raa1 Rcb8 30. Rac1 Rb1 31. Rxc2 Rxf1+ 32. Kxf1
Rb1+ 33. Ke2 Rb6 34. Kf3 Rf6+ 35. Kg3 Kg6 36. f4 h5 37. Rc5 Re6 38. Rg5+ Kh6
39. Kf3 f6 40. Rg8 Ra6 41. f5 Ra3+ 42. Ke4 Ra4+ 43. Kd5 Rxh4 44. Rg6+ Kh7 45.
Rxf6 Rg4 46. Rb6 Rxg2 47. f6 Rf2 48. Ke6 Re2+ 49. Kf7 Kh6 50. Rb5 h4 51. Rf5
Ra2 52. Kg8 Ra8+ 53. Kf7 Ra7+ 54. Kg8 Kg6 55. Rf3 *
Position (FEN): 6K1/r7/5Pk1/8/7p/5R2/8/8 b - - 9 55
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1373
Best move: Ra8#