Chess puzzle (Checkmate)
Moves: 1. Nf3 c5 2. b3 Nc6 3. Bb2 Nf6 4. e3 a6 5. d4 cxd4 6. Nxd4 g6 7. Be2 Bg7 8. O-O
O-O 9. c4 d5 10. Nxc6 bxc6 11. cxd5 cxd5 12. Nc3 Bf5 13. Rc1 Qa5 14. Na4 Rfd8
15. Bd3 Ne4 16. Bxg7 Kxg7 17. Qe2 Nd6 18. Rfd1 Bxd3 19. Qxd3 e6 20. h3 Rac8 21.
Qd4+ Kg8 22. Qf4 Ne4 23. Qe5 Rxc1 24. Rxc1 Qd2 25. Qb2 Qb4 26. a3 Qb5 27. Qc2
a5 28. Nc3 Nxc3 29. Qxc3 Rb8 30. Rb1 Qb7 31. Qxa5 Ra8 32. Qc5 Rc8 33. Qd4 Rc2
34. a4 Qa6 35. Qf4 Qd3 36. a5 Rxf2 37. Qxf2 Qxb1+ 38. Kh2 Qxb3 39. Qd2 Qa3 40.
Qe1 e5 41. Qd2 Qd6 42. a6 Qxa6 43. Qxd5 Qf6 44. Qa8+ Kg7 45. Qe4 Qf5 46. Qd5 h5
47. Kg1 h4 48. Qc4 Qg5 49. Qe4 Kf6 50. Qf3+ Qf5 51. Qe2 Qe4 52. Qf2+ Kg5 53.
Kh1 f5 54. Qd2 f4 55. exf4+ Qxf4 56. Qd8+ Kf5 57. Qf8+ Ke4 58. Qb4+ Ke3 59.
Qe1+ Kd3 60. Qd1+ Qd2 61. Qb1+ Qc2 62. Qb5+ Kd2 63. Qxe5 Qd1+ 64. Kh2 Qe1 65.
Qd6+ Ke2 66. Qxg6 Kf1 67. Qf5+ Qf2 68. Qg4 *
Position (FEN): 8/8/8/8/6Qp/7P/5qPK/5k2 b - - 4 68
Black to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 970
Best move: Qg1#