Chess puzzle (Checkmate)
Moves: 1. Nc3 Nf6 2. e4 e5 3. Bc4 Bc5 4. h3 O-O 5. d3 c6 6. Bg5 a5 7. a4 Na6 8. Qf3
Be7 9. Bxa6 Rxa6 10. Bxf6 Bxf6 11. g4 d6 12. h4 Be7 13. g5 f5 14. Nge2 fxe4 15.
Qxe4 Bf5 16. Qg2 d5 17. Ng3 Bg4 18. Rg1 Bc5 19. Rf1 Rb6 20. f3 Be6 21. Nd1 Rb4
22. Rh1 Rbf4 23. Nh5 Rxf3 24. Nf6+ R8xf6 25. gxf6 Qxf6 26. Nc3 Bb4 27. O-O-O e4
28. Rhf1 Bxc3 29. bxc3 Qxc3 30. Rxf3 exf3 31. Qxf3 Qa3+ 32. Kd2 Qb4+ 33. Kc1
Bg4 34. Qe3 Bxd1 35. Qe6+ Kf8 36. Qc8+ Kf7 37. Qf5+ Ke7 38. Qe5+ Kd7 39. Qxg7+
Kc8 40. Qg8+ Kc7 41. Qxh7+ Kb6 42. Kxd1 Qg4+ 43. Kc1 Qxa4 44. h5 Qa1+ 45. Kd2
a4 46. h6 a3 47. Qg7 Qxg7 48. hxg7 a2 49. g8=Q a1=Q 50. Qd8+ Ka7 51. Qe7 Qa5+
52. Kc1 d4 53. Qd6 Qe1+ 54. Kb2 Qc3+ 55. Kc1 Kb6 56. Qd8+ Kb5 57. Qc7 b6 58.
Kb1 c5 59. Qd6 Qb4+ 60. Kc1 Qa3+ 61. Kb1 Qa5 62. Qd7+ Kb4 63. Qd5 Qb5 64. Qa2
Kc3+ 65. Kc1 Kb4 66. Kb2 c4 *
Position (FEN): 8/8/1p6/1q6/1kpp4/3P4/QKP5/8 w - - 0 67
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1458
Best move: Qa3#