Chess puzzle (Checkmate)
Moves: 1. Nf3 d6 2. d4 c6 3. c4 Qc7 4. Nc3 e5 5. e4 Nf6 6. Be2 Be7 7. O-O O-O 8. Be3
Nbd7 9. d5 c5 10. Nd2 Re8 11. a3 Nf8 12. b4 b6 13. bxc5 bxc5 14. Rb1 Bd7 15.
Qc2 a6 16. Rb3 Reb8 17. Rfb1 Rxb3 18. Qxb3 Bc8 19. h3 N8d7 20. g3 Rb8 21. Qc2
Rxb1+ 22. Qxb1 h6 23. Kg2 Bd8 24. Qb3 Qb6 25. Qxb6 Bxb6 26. Nb3 Bc7 27. h4 Kf8
28. f3 Ke8 29. Kf2 Kd8 30. Bf1 Nb6 31. Nd2 Bd7 32. Bd3 Na4 33. Nxa4 Bxa4 34.
Ke2 Ba5 35. Nb1 Kc7 36. Bd2 Bxd2 37. Kxd2 Kb6 38. g4 g5 39. h5 Ka5 40. Nc3 Nd7
41. Bc2 Nb6 42. Bxa4 Nxa4 43. Ne2 Nb6 44. Kc3 Nc8 45. Kb3 Ne7 46. Ng3 f6 47.
Ne2 Nc8 48. Nc3 Ne7 49. Nd1 Nc8 50. Ne3 Ne7 51. Nf1 Nc8 52. Nd2 Ne7 53. a4 Nc8
54. Ka3 Nb6 *
Position (FEN): 8/8/pn1p1p1p/k1pPp1pP/P1P1P1P1/K4P2/3N4/8 w - - 3 55
White to move.
Themes:  Endgame, Knight Endgame Mate in 1 
Puzzle rating: 650
Best move: Nb3#