Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. Nf3 d5 3. exd5 Qxd5 4. Nc3 Qd8 5. d4 c5 6. Be3 Qb6 7. Bb5+ Bd7 8.
Bxd7+ Nxd7 9. b3 Nh6 10. O-O Nf5 11. dxc5 Bxc5 12. Bxc5 Qxc5 13. Ne4 Qc6 14.
Re1 Rc8 15. c4 Nc5 16. Nxc5 Qxc5 17. Qd2 O-O 18. Rac1 Rfd8 19. Qc2 Nd4 20. Nxd4
Rxd4 21. Rcd1 Rcd8 22. Rxd4 Rxd4 23. Rd1 g6 24. Rxd4 Qxd4 25. g3 Qa1+ 26. Kg2
Qd4 27. Qe2 Qc5 28. Qc2 Qc6+ 29. Kg1 Qd6 30. Kg2 Kg7 31. Qc3+ f6 32. Qa5 a6 33.
Qc3 Kf7 34. Qa5 h6 35. Qc3 h5 36. Qc1 Qc6+ 37. Kg1 g5 38. h4 Kg6 39. hxg5 fxg5
40. Qc2+ Kf6 41. Qc3+ e5 42. Qc2 Qd6 43. Kg2 Qd4 44. Qh7 h4 45. Qh6+ Kf5 46.
Qf8+ Kg4 47. gxh4 Kxh4 48. Qh6+ Kg4 49. Qh3+ Kf4 *
Position (FEN): 8/1p6/p7/4p1p1/2Pq1k2/1P5Q/P4PK1/8 w - - 4 50
White to move.
Themes:  Endgame, Queen Endgame Mate in 1 
Puzzle rating: 1605
Best move: Qf3#