Chess puzzle (Checkmate)
Moves: 1. c4 c5 2. Nf3 e6 3. d4 d5 4. e3 Nc6 5. Be2 Nf6 6. O-O Be7 7. Nc3 O-O 8. h3 h6
9. Ne5 Qc7 10. Nxc6 bxc6 11. Bd2 e5 12. dxe5 Qxe5 13. f4 Qc7 14. cxd5 cxd5 15.
Rc1 Rd8 16. Bf3 Bf5 17. Nb5 Qb6 18. Qb3 Rab8 19. g4 Be4 20. Nc3 Qxb3 21. axb3
Bxf3 22. Rxf3 Rxb3 23. Ra1 Rxb2 24. Be1 Rb7 25. Na4 d4 26. exd4 cxd4 27. Rd3 g6
28. Rad1 Rbd7 29. Ba5 Rc8 30. Rxd4 Rxd4 31. Rxd4 Kg7 32. Kg2 Ne8 33. Re4 Bd6
34. Bc3+ Kf8 35. Bd4 Rc4 36. Nc3 Bc5 37. Ne2 Bxd4 38. Rxd4 Rc2 39. Kf3 Ra2 40.
Rd8 Ke7 41. Ra8 Nf6 42. h4 h5 43. g5 Ng4 44. Nd4 Rf2+ 45. Ke4 Ra2 46. Nc6+ Ke6
47. Rxa7 Rxa7 48. Nxa7 Nf2+ 49. Kf3 Nd3 50. Nb5 Kf5 *
Position (FEN): 8/5p2/6p1/1N3kPp/5P1P/3n1K2/8/8 w - - 5 51
White to move.
Themes:  Endgame, Knight Endgame Mate in 1 
Puzzle rating: 1764
Best move: Nd4#