Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nc3 Nf6 3. Bf4 e6 4. e3 c5 5. Be2 Nc6 6. Nb5 Qa5+ 7. c3 Kd7 8. Nf3
c4 9. O-O Qxb5 10. a4 Qxb2 11. Ne5+ Nxe5 12. dxe5 Ne4 13. Bxc4 Nxc3 14. Qd3 Ke8
15. Rfc1 Bb4 16. Bb5+ Bd7 17. Bxd7+ Kxd7 18. e4 Rhc8 19. exd5 Nxd5 20. Qb5+ Kd8
21. Rcb1 Qd4 22. Bg3 Rab8 23. Rd1 Qb2 24. Bh4+ f6 25. exf6 gxf6 26. Bxf6+ Qxf6
27. Rxd5+ exd5 28. Qxd5+ Qd6 29. Qg5+ Qe7 30. Rd1+ Ke8 31. Qb5+ Kf7 32. Qh5+
Kg7 33. Qg4+ Kh8 34. Qd4+ Kg8 35. Qg4+ Kf8 36. Qf4+ Ke8 37. h3 Rd8 38. Rb1 a5
39. Qf5 Rbc8 40. Qh5+ Qf7 41. Qe5+ Kf8 42. Qh8+ Ke7 43. Qe5+ Qe6 44. Qg5+ Kf7
45. Qh5+ Qg6 46. Qf3+ Kg7 47. Qxb7+ Kh6 48. Rf1 Qc6 49. Qf7 Qxa4 50. g4 Qd7 *
Position (FEN): 2rr4/3q1Q1p/7k/p7/1b4P1/7P/5P2/5RK1 w - - 1 51
White to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1641
Best move: Qf6#