Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 g6 4. d5 Nb8 5. Nc3 d6 6. Be3 Bg4 7. Be2 Bxf3 8. Bxf3
Nd7 9. Qe2 Ne5 10. O-O-O Nxf3 11. gxf3 Bg7 12. Kb1 a6 13. Qd3 Qb6 14. Na4 Qb5
15. Qxb5+ axb5 16. Nb6 Ra6 17. Nc8 Kd8 18. Nxd6 exd6 19. h4 h6 20. h5 g5 21. f4
f6 22. e5 dxe5 23. fxe5 fxe5 24. Bxc5 Ne7 25. d6 Nf5 26. c3 Kd7 27. b4 Bf8 28.
Rhe1 Bg7 29. Kb2 Re8 30. Kb3 Bf8 31. a4 Rxa4 32. c4 Raa8 33. cxb5 Re6 34. Ra1
Rxa1 35. Rxa1 Bxd6 36. Bxd6 Nxd6 37. Ra8 Nxb5 38. Rh8 Nd4+ 39. Kc4 b5+ 40. Kd5
Rc6 41. Rh7+ Ke8 42. Kxe5 Nc2 43. Kd5 Nxb4+ 44. Kd4 Kf8 45. Rh8+ Kg7 46. Ra8
Rc4+ 47. Ke5 Rh4 48. Ra7+ Kg8 49. Kf6 Rxh5 50. Kg6 Rh4 *
Position (FEN): 6k1/R7/6Kp/1p4p1/1n5r/8/5P2/8 w - - 2 51
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 710
Best move: Ra8#