Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. c3 Nc6 5. Nf3 e6 6. Bd3 Bd6 7. Bg3 O-O 8. O-O
Qe7 9. Ne5 cxd4 10. exd4 Ne4 11. Bxe4 dxe4 12. Qe2 f5 13. Nd2 Bxe5 14. dxe5 f4
15. Nxe4 fxg3 16. Nxg3 b6 17. Rad1 Bb7 18. Rd6 Rad8 19. Rfd1 Rxd6 20. exd6 Qd7
21. Qg4 Qf7 22. f3 Ne5 23. Qh3 Nxf3+ 24. gxf3 Qxf3 25. Qxe6+ Kh8 26. Qe2 Qxe2
27. Nxe2 Bf3 28. d7 Rd8 29. Kf2 Bg4 30. Rd4 Bxe2 31. Kxe2 Kg8 32. Ke3 Kf7 33.
b4 Ke7 34. Ke4 Rxd7 35. Rxd7+ Kxd7 36. Kd5 h5 37. a4 h4 38. h3 a6 39. b5 axb5
40. axb5 Kc7 41. Ke6 g6 42. Kf6 Kd6 43. Kxg6 Kc5 44. Kg5 Kxb5 45. Kxh4 Kc4 46.
Kg5 Kxc3 47. h4 b5 48. h5 b4 49. h6 b3 50. h7 b2 51. h8=Q+ Kc2 52. Qh2+ Kc3 53.
Qg1 Kc2 54. Qf2+ Kb3 55. Qe1 Kc2 56. Qe4+ Kc1 57. Qc4+ Kd2 58. Qb3 Kc1 59. Qc3+
Kb1 60. Kf4 Ka2 61. Qc2 Ka1 62. Qa4+ Kb1 63. Ke3 Kc1 64. Qc4+ Kb1 65. Kd2 Ka1
66. Qa4+ Kb1 67. Qb3 Ka1 68. Kc2 b1=Q+ *
Position (FEN): 8/8/8/8/8/1Q6/2K5/kq6 w - - 0 69
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 567
Best move: Qxb1#