Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nc3 a6 3. Nf3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e6 7. Qd2 Be7 8. f4
h6 9. Bxf6 Bxf6 10. O-O-O Qb6 11. g4 Be7 12. f5 Nc6 13. Kb1 Ne5 14. Be2 Bd7 15.
h4 O-O-O 16. g5 hxg5 17. hxg5 g6 18. f6 Rxh1 19. Rxh1 Bf8 20. a3 Kb8 21. Rh8
Rc8 22. Nb3 a5 23. a4 d5 24. exd5 Bb4 25. Rxc8+ Bxc8 26. dxe6 Bxe6 27. Qd4 Qxd4
28. Nxd4 Bd7 29. Bb5 Bc5 30. Bxd7 Nxd7 31. Nf3 Be3 32. Nd5 Bc5 33. c3 Bd6 34.
Kc2 b6 35. Kd3 Kb7 36. Ke4 Kc6 37. Ne7+ Kc7 38. Kd5 Bf4 39. Ng8 Nc5 40. Nh6 Nd7
41. Nxf7 Bxg5 42. N7xg5 Nxf6+ 43. Kc4 Nd7 44. Ne4 Kc6 45. Nd4+ Kb7 46. Kb5 Ne5
47. Ne6 Nf7 48. N4g5 *
Position (FEN): 8/1k3n2/1p2N1p1/pK4N1/P7/2P5/1P6/8 b - - 11 48
Black to move.
Themes:  Endgame, Knight Endgame Mate in 1 
Puzzle rating: 998
Best move: Nd6#