Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. c5 b6 8. b4 a5
9. a3 Ba6 10. Bxa6 Nxa6 11. Qb1 Ra7 12. O-O Qa8 13. b5 cxb5 14. Nxb5 bxc5 15.
Nxa7 Qxa7 16. dxc5 Nxc5 17. Nd4 Qd7 18. Qb5 Qxb5 19. Nxb5 Nfe4 20. Rfc1 Nb3 21.
f3 Nxc1 22. Rxc1 Nd2 23. Rc7 Re8 24. Bd6 Bf6 25. Kf2 Nc4 26. Bc5 h6 27. h3 Be5
28. Rc6 Rb8 29. a4 Nb2 30. Bd4 Bxd4 31. Nxd4 Nxa4 32. Ra6 Nc5 33. Rxa5 Nd3+ 34.
Ke2 Ne5 35. f4 Rb2+ 36. Kf1 Nc4 37. Ra8+ Kh7 38. Ra7 Nxe3+ 39. Ke1 Nxg2+ 40.
Kf1 Ne3+ 41. Kg1 Kg6 42. f5+ exf5 43. Ra6+ f6 44. Rd6 f4 45. Nf3 Rg2+ 46. Kh1
Rg3 47. Ng1 Rg5 48. Nf3 Rh5 49. Kh2 Nf5 50. Rxd5 Ng3 51. Rd4 Re5 52. Rxf4 Nh5
53. Rg4+ Kf5 *
Position (FEN): 8/6p1/5p1p/4rk1n/6R1/5N1P/7K/8 w - - 3 54
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1338
Best move: Nd4#