Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Bb4 5. g3 Nc6 6. Bg2 Ne4 7. Qc2 O-O 8. O-O
Bxc3 9. bxc3 f5 10. cxd5 exd5 11. c4 Be6 12. cxd5 Bxd5 13. Bf4 Nf6 14. e3 Be4
15. Qb3+ Kh8 16. Ne5 Nxe5 17. Bxe5 Bxg2 18. Kxg2 b6 19. Rac1 Rc8 20. a4 Ng4 21.
Bf4 Rf6 22. Bg5 c6 23. Bxf6 Qxf6 24. h3 Nh6 25. a5 b5 26. Rc5 a6 27. Rfc1 Nf7
28. Qd1 Nd6 29. Qf3 g6 30. Rxc6 Rxc6 31. Rxc6 Qe7 32. Rxa6 Ne4 33. Rb6 b4 34.
Qf4 Qa7 35. Qe5+ Kg8 36. Rb8+ Kf7 37. Qe8+ Kf6 38. Qd8+ Ke6 39. Rb6+ Kf7 40.
Rf6+ Nxf6 41. Qd6 Qxa5 42. g4 Qa8+ 43. Kg1 Qd5 44. Qc7+ Qd7 45. Qc4+ Qd5 46.
Qxb4 fxg4 47. hxg4 Nxg4 48. Qb8 Qh5 49. Qg3 Kf6 50. Qf4+ Qf5 51. Qd6+ Qe6 52.
Qg3 Qf5 53. Kg2 Kg5 54. f3 Qc2+ 55. Kh3 h5 *
Position (FEN): 8/8/6p1/6kp/3P2n1/4PPQK/2q5/8 w - - 0 56
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1537
Best move: Qf4#