Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nf3 Bg4 6. c5 N6d7 7. Be2 e6 8.
Nc3 Be7 9. O-O O-O 10. h3 Bf5 11. Re1 Nc6 12. Bf4 Bf6 13. Bb5 Ne7 14. Ne5 Bxe5
15. dxe5 c6 16. Bc4 Nd5 17. Bxd5 exd5 18. b4 a5 19. a3 axb4 20. axb4 Rxa1 21.
Qxa1 b6 22. b5 Nxc5 23. bxc6 d4 24. Nb5 Ne6 25. Bd2 Qd5 26. Nd6 Bc2 27. Qb2
Qxc6 28. Bb4 d3 29. Ne4 Ra8 30. Bd6 h6 31. Nd2 b5 32. Ra1 Rxa1+ 33. Qxa1 Nf4
34. f3 b4 35. Qa5 b3 36. Qb4 Ne2+ 37. Kh2 Qd5 38. Ne4 Nf4 39. Qc3 Ne6 40. Ba3
Kh7 41. Bb2 g5 42. Qd2 Kg6 43. Qe3 Nf4 44. g3 Ne6 45. f4 d2 46. Nxd2 gxf4 47.
gxf4 Qd3 48. Qxd3+ Bxd3 49. Nxb3 Nxf4 50. Nc5 Kf5 51. Nd7 h5 52. Kg3 Ng6 53.
Nc5 Be4 54. Nb7 h4+ 55. Kf2 Nxe5 56. Nd6+ Kf4 *
Position (FEN): 8/5p2/3N4/4n3/4bk1p/7P/1B3K2/8 w - - 2 57
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1425
Best move: Bc1#