Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nc3 Nf6 3. f4 d6 4. Nf3 Be7 5. f5 b6 6. a4 a5 7. Bc4 Bb7 8. d3 Nc6
9. O-O O-O 10. Qe1 h6 11. Bxh6 gxh6 12. Qh4 Kg7 13. h3 Nh7 14. Qg4+ Kh8 15. Qh5
Bg5 16. Bxf7 Qf6 17. Bg6 Ne7 18. Bxh7 Kxh7 19. Nb5 Qf7 20. Qxg5 hxg5 21. Nxg5+
Kg7 22. Nxf7 Rxf7 23. Nxc7 Rc8 24. Ne6+ Kf6 25. g4 Ng8 26. g5+ Ke7 27. g6 Rf6
28. c3 Ba6 29. Rad1 Rc6 30. Rf2 Bc8 31. Ng5 Ba6 32. h4 Nh6 33. Rg2 Rc8 34. Nf3
Rg8 35. h5 Bc8 36. d4 exd4 37. cxd4 d5 38. e5 Rxf5 39. Nh4 Rxh5 40. Nf3 Bg4 41.
Rf1 Rxg6 42. Nd2 Rf5 43. Rxf5 Nxf5 44. Nf1 Nxd4 45. Ne3 Nf3+ 46. Kf2 Nh4 47.
Rxg4 Rxg4 48. Nxg4 Ke6 49. Ke3 Nf5+ 50. Kd3 d4 51. b3 Kd5 52. e6 Kxe6 53. Kc4
d3 54. Nf2 Nd6+ 55. Kxd3 Kd5 56. Kc2 Kc5 57. Kb2 Kb4 *
Position (FEN): 8/8/1p1n4/p7/Pk6/1P6/1K3N2/8 w - - 5 58
White to move.
Themes:  Endgame, Knight Endgame Mate in 1 
Puzzle rating: 573
Best move: Nd3#