Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e6 6. Bg5 Be7 7. Bb5+ c6 8.
Bc4 O-O 9. e5 Nfd7 10. Bxe7 Qxe7 11. Nf3 b5 12. Bb3 a5 13. a3 Ba6 14. Bc2 b4
15. axb4 axb4 16. Ne2 c5 17. Bd3 Bxd3 18. Rxa8 c4 19. b3 Bxe2 20. Qxe2 c3 21.
O-O Nb6 22. Raa1 Nd5 23. Qc4 Nd7 24. Ne1 f6 25. Nd3 Rb8 26. f4 Ne3 27. Qc7 Nxf1
28. Ra7 Rd8 29. Kxf1 fxe5 30. dxe5 c2 31. Qxc2 Qh4 32. Qc7 Kf8 33. Qd6+ Qe7 34.
Qxe7+ Kxe7 35. Nxb4 Ke8 36. Ra6 Nc5 37. Rc6 Nxb3 38. Rxe6+ Kf7 39. Rd6 Rb8 40.
Nd5 Nd2+ 41. Ke2 Rb2 42. Kd3 Nf1 43. f5 g6 44. Rd7+ Kf8 45. Nf6 gxf5 46. e6
Rd2+ 47. Kc3 Rxd7 48. exd7 Ke7 49. h3 Ne3 50. Kd4 Nxg2 51. Kc5 Nf4 52. Kc6 Ne6
53. Nd5+ Kd8 54. Kd6 Nf8 55. Nb6 f4 56. Nd5 f3 57. Nb4 f2 *
Position (FEN): 3k1n2/3P3p/3K4/8/1N6/7P/5p2/8 w - - 0 58
White to move.
Themes:  Endgame, Knight Endgame Mate in 1 
Puzzle rating: 519
Best move: Nc6#