Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Nb3 g6 7. Be2 Bg7 8. g4
Be6 9. Be3 Nc6 10. g5 Nd7 11. Qd2 Rc8 12. O-O-O Nde5 13. f4 Nc4 14. Bxc4 Bxc4
15. Nd5 Bxb3 16. axb3 O-O 17. h4 e6 18. Nb6 Rc7 19. Qxd6 Qxd6 20. Rxd6 h6 21.
e5 hxg5 22. hxg5 Re8 23. Rhd1 Ne7 24. Rd7 Rxd7 25. Rxd7 Nf5 26. Bc5 Bf8 27.
Bxf8 Rxf8 28. Rxb7 Rd8 29. Rd7 Rb8 30. Nc4 Ng3 31. Nd6 Ne2+ 32. Kd2 Nxf4 33.
Nxf7 Nd5 34. Nh6+ Kf8 35. Rf7+ Ke8 36. Rh7 Rb6 37. Rh8+ Kd7 38. c4 Nf4 39. Rh7+
Kc6 40. Kc2 Ne2 41. Kd3 Nf4+ 42. Ke4 Ne2 43. Re7 Rxb3 44. Rxe6+ Kc5 45. Rxa6
Ng3+ 46. Kf4 Nh5+ 47. Kg4 Rg3+ 48. Kh4 Rb3 49. Rxg6 Nf4 50. Rf6 Ng2+ 51. Kg4
Ne3+ 52. Kh5 Nxc4 53. Rf2 Nxe5 54. Rf5 *
Position (FEN): 8/8/7N/2k1nRPK/8/1r6/1P6/8 b - - 1 54
Black to move.
Themes:  Endgame Anastasia's Mate, Mate in 1 
Puzzle rating: 834
Best move: Rh3#