Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. Nf3 d5 3. Bf4 c5 4. e3 Nf6 5. c3 Bd6 6. Bxd6 Qxd6 7. Bd3 Nbd7 8.
O-O O-O 9. Nbd2 e5 10. dxe5 Nxe5 11. Nxe5 Qxe5 12. Nf3 Qe7 13. h3 Bd7 14. Qc2
Bc6 15. Nd2 Rfe8 16. Rae1 b5 17. Be2 a5 18. Bf3 a4 19. c4 bxc4 20. Nxc4 Bb5 21.
Nb6 Rab8 22. Nxd5 Nxd5 23. Bxd5 Bxf1 24. Rxf1 Red8 25. e4 Kh8 26. Rc1 f5 27. f3
Qg5 28. b3 fxe4 29. fxe4 axb3 30. axb3 Rxb3 31. Rf1 Rxh3 32. Qf2 h5 33. Qxc5
Rd3 34. Rf8+ Kh7 35. Rxd8 Rd1+ 36. Kf2 Qf4+ 37. Ke2 Qf1+ 38. Ke3 Rd2 39. Kxd2
Qxg2+ 40. Kc3 h4 41. Qf8 Qg3+ 42. Kd4 Qg1+ 43. Ke5 Qg3+ 44. Ke6 Kh6 45. Qh8+
Kg6 46. Rg8 Qh3+ 47. Kd6 Qa3+ 48. Ke5 Qb2+ 49. Ke6 Qb6+ 50. Kd7 Qa7+ 51. Ke6
Qa6+ 52. Ke5 *
Position (FEN): 6RQ/6p1/q5k1/3BK3/4P2p/8/8/8 b - - 23 52
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 872
Best move: Qf6#