Chess puzzle (Checkmate)
Moves: 1. e4 d6 2. f4 d5 3. e5 c5 4. Nf3 Nc6 5. Bb5 a6 6. Bxc6+ bxc6 7. O-O g6 8. c3
Bg7 9. Qa4 Qc7 10. Na3 Bg4 11. d4 cxd4 12. Nxd4 Bd7 13. Qc2 c5 14. Nf3 Nh6 15.
Ng5 O-O 16. h3 f6 17. exf6 exf6 18. Nf3 Bf5 19. Qd1 Be4 20. c4 d4 21. Qe1 Rfe8
22. Qg3 Nf5 23. Qh2 Ne3 24. Bxe3 dxe3 25. Rae1 Bxf3 26. Rxf3 f5 27. h4 Bxb2 28.
Nc2 Bd4 29. Nxe3 Rxe3 30. Rfxe3 Re8 31. Qg3 Rxe3 32. Rxe3 Qe7 33. Kf2 Qe4 34.
Qf3 Qc2+ 35. Kg3 Bxe3 36. Qxe3 Qxc4 37. Qe8+ Kg7 38. Qe7+ Qf7 39. Qe5+ Kh6 40.
Qxc5 Qxa2 41. Qf8+ Kh5 42. Qf6 h6 43. Kh3 a5 44. Qc3 Qe2 45. Qxa5 Qg4+ 46. Kh2
Qxf4+ 47. g3 Qf2+ 48. Kh3 g5 49. hxg5 hxg5 50. Qa4 g4+ 51. Qxg4+ *
Position (FEN): 8/8/8/5p1k/6Q1/6PK/5q2/8 b - - 0 51
Black to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 746
Best move: fxg4#