Chess puzzle (Checkmate)
Moves: 1. e4 f5 2. exf5 Nf6 3. d4 e6 4. Bg5 Be7 5. Bxf6 Bxf6 6. Qh5+ Ke7 7. Nf3 h6 8.
Nc3 d6 9. fxe6 Bxe6 10. d5 Bf7 11. Qf5 Re8 12. O-O-O Nd7 13. Bd3 Kf8 14. Qh7
Nc5 15. Qh8+ Bg8 16. Bh7 Ke7 17. Rhe1+ Ne6 18. Nd4 Bf7 19. Bg8 Bxg8 20. Nxe6
Bxe6 21. Rxe6+ Kf7 22. Qh7 Rxe6 23. dxe6+ Kxe6 24. Qg6 Qf8 25. Re1+ Kd7 26.
Qg4+ Kd8 27. Nd5 c6 28. Nf4 Bg5 29. g3 Kc7 30. Kb1 Bxf4 31. gxf4 Rd8 32. a3 Rd7
33. f5 Rf7 34. Qg6 Rxf5 35. Re8 Qf6 36. Qg4 h5 37. Qe4 Re5 38. Rxe5 Qxe5 39.
Qg6 Qe1+ 40. Ka2 Qxf2 41. Qxg7+ Kb6 42. Qe7 d5 43. Qd8+ Ka6 44. Qc7 Qxc2 45.
Qd6 Qc4+ 46. Ka1 d4 47. b4 Qc3+ 48. Ka2 d3 49. Qc7 Qc2+ 50. Ka1 d2 *
Position (FEN): 8/ppQ5/k1p5/7p/1P6/P7/2qp3P/K7 w - - 0 51
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1254
Best move: Qa5#