Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. O-O Nc6 6. Nbd2 Bd6 7. c4 b6 8. cxd5
Nxd5 9. Bb5 Bb7 10. Ne5 Qc7 11. Qa4 Rc8 12. Ndc4 O-O 13. Nxc6 Bxc6 14. Bxc6
Qxc6 15. Qxc6 Rxc6 16. dxc5 Bxc5 17. Ne5 Rc7 18. Bd2 Bd6 19. Nd3 a6 20. Rac1
Rfc8 21. Rxc7 Rxc7 22. Rc1 Rxc1+ 23. Nxc1 Kf8 24. Kf1 Ke7 25. a3 g6 26. e4 Nf6
27. f3 Bxh2 28. Bg5 h6 29. Bxh6 Kd7 30. Nd3 Bc7 31. Bg5 Ne8 32. Kf2 b5 33. Be3
Kc6 34. Nc5 a5 35. g3 Bb6 36. Nb3 Bxe3+ 37. Kxe3 a4 38. Nd4+ Kc5 39. Kd3 Nd6
40. Kc3 Nc4 41. f4 Nd6 42. Kd3 Nc4 43. Kc3 Nd6 44. Kd3 Nc4 45. f5 gxf5 46. exf5
exf5 47. Nxf5 Nxb2+ 48. Kc3 Nc4 49. g4 Nxa3 50. g5 Nc4 51. Nh6 Nd6 52. Ng4 b4+
53. Kb2 Nb5 54. Ne5 a3+ 55. Kb3 Nd4+ 56. Ka2 Nb5 57. Nxf7 Kc4 58. Ne5+ Kc3 59.
g6 b3+ 60. Kb1 a2+ 61. Ka1 Kc2 62. Nc4 Nd4 63. g7 Kc3 64. g8=Q *
Position (FEN): 6Q1/8/8/8/2Nn4/1pk5/p7/K7 b - - 0 64
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 900
Best move: Nc2#