Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Bc4 e6 3. a3 a6 4. Nc3 g6 5. h4 Bg7 6. d3 h5 7. Bg5 Qa5 8. Qd2 b5
9. Ba2 Nc6 10. Nge2 Nd4 11. Nxd4 Bxd4 12. O-O Ne7 13. Bxe7 Bxc3 14. bxc3 Kxe7
15. Qg5+ Ke8 16. Qf6 Rg8 17. f4 Qd8 18. Qe5 d6 19. Qg5 Qxg5 20. fxg5 Ke7 21.
Rf6 Bd7 22. Raf1 Rgf8 23. c4 b4 24. axb4 cxb4 25. Bb3 a5 26. Ra1 a4 27. Ba2 e5
28. c5 Be6 29. Bxe6 fxe6 30. Rxf8 Kxf8 31. cxd6 Ke8 32. Kf2 Kd7 33. Ke3 Kxd6
34. d4 exd4+ 35. Kxd4 Ra5 36. Kc4 Ke5 37. Kxb4 Ra8 38. Rxa4 Rxa4+ 39. Kxa4 Kxe4
40. Kb5 Kf4 41. c4 e5 42. c5 e4 43. c6 e3 44. c7 e2 45. c8=Q e1=Q 46. Qf8+ Kg4
47. Qf3+ Kxh4 *
Position (FEN): 8/8/6p1/1K4Pp/7k/5Q2/6P1/4q3 w - - 0 48
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1770
Best move: Qf4#