Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6 7. O-O Nf6 8.
Qe2 Be7 9. Rd1 e5 10. h3 O-O 11. b4 a6 12. a4 Be6 13. Bxe6 fxe6 14. b5 axb5 15.
Nxb5 d5 16. exd5 exd5 17. Nxe5 Ne4 18. Nf3 Bf6 19. Bb2 Bxb2 20. Qxb2 Ng5 21.
Nxg5 Qxg5 22. Nd4 Nxd4 23. Qxd4 Rad8 24. a5 Rd7 25. Ra3 h6 26. Rg3 Qd8 27. Qd2
Kh8 28. Rb1 d4 29. Rb6 Rf6 30. Rxf6 Qxf6 31. Rd3 Qe5 32. g3 Qe4 33. Kh2 h5 34.
h4 Kh7 35. Qd1 g6 36. Qd2 Qe5 37. Kg1 Rd5 38. Kh2 Qe4 39. Kg1 Rxa5 40. Qxa5
Qxd3 41. Qc7+ Kg8 42. Qb8+ Kf7 43. Qxb7+ Ke6 44. Qc6+ Ke5 45. Qc5+ Ke4 46. Qe7+
Kd5 47. Qd7+ Kc4 48. Qa4+ Kc3 49. Qa1+ Kd2 50. Qb2+ Ke1 51. Qa1+ Qd1 52. Qb2 d3
53. Kg2 Qe2 54. Qb1+ Qd1 55. Qb4+ Qd2 56. Qb1+ Ke2 *
Position (FEN): 8/8/6p1/7p/7P/3p2P1/3qkPK1/1Q6 w - - 8 57
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 925
Best move: Qf1#