Chess puzzle (Checkmate)
Moves: 1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Bf4 Nc6 5. e3 a6 6. Nc3 Nf6 7. Bd3 Bg4 8.
Nge2 e6 9. h3 Bh5 10. O-O Bd6 11. Bxd6 Qxd6 12. Rc1 O-O 13. Qd2 Bg6 14. Nf4 b5
15. Nxg6 hxg6 16. Ne2 Rfc8 17. Rc3 Nb4 18. Rxc8+ Rxc8 19. Rc1 Rxc1+ 20. Nxc1
Nxd3 21. Nxd3 Qc7 22. Qc1 Qc4 23. Qxc4 dxc4 24. Nb4 a5 25. Nc6 a4 26. Kf1 Nd5
27. Ke2 c3 28. b3 Kf8 29. bxa4 bxa4 30. Kd3 g5 31. g3 f5 32. f3 c2 33. Kxc2
Nxe3+ 34. Kd3 Nd5 35. Kc4 f4 36. g4 Ke8 37. Nb4 Ne3+ 38. Kd3 Kd7 39. Na6 Kd6
40. Nc5 a3 41. Ne4+ Kd5 42. Nc3+ Kd6 43. Nb1 Nd5 44. Nxa3 Nb4+ 45. Ke4 Nxa2 46.
Nc4+ Ke7 47. Ke5 Nb4 48. Ke4 Nc2 49. Ne5 Kf6 50. Nd7+ Ke7 51. Nc5 Kf6 52. Nd3
Ne3 53. h4 Nd5 54. h5 *
Position (FEN): 8/6p1/4pk2/3n2pP/3PKpP1/3N1P2/8/8 b - - 0 54
Black to move.
Themes:  Endgame, Knight Endgame Mate in 1 
Puzzle rating: 866
Best move: Nc3#