Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bg5 e6 3. Nd2 c5 4. e4 cxd4 5. e5 Qa5 6. exf6 Qxg5 7. fxg7 Bxg7 8.
Ngf3 Qa5 9. Bd3 Nc6 10. O-O Nb4 11. Nc4 Qc7 12. Ng5 d5 13. Nd2 Nxd3 14. cxd3
Qf4 15. Nh3 Qh6 16. f4 e5 17. f5 Qe3+ 18. Kh1 Qxd3 19. Rf3 Qb5 20. Qe1 Bf6 21.
Nf4 Kd8 22. Nh5 Qb6 23. Nb3 e4 24. Rf1 d3 25. Rc1 Bxb2 26. Qh4+ f6 27. Rc5 Rf8
28. Rxd5+ Bd7 29. Nf4 Kc7 30. Qxh7 Rad8 31. Ne6+ Kb8 32. Rxd7 Rxd7 33. Qxd7 Rc8
34. Nbc5 d2 35. Qxd2 Be5 36. Nd7+ Ka8 37. Nxb6+ axb6 38. Qe3 Rc5 39. Qa3+ Kb8
40. Qb3 Rc8 41. Nf4 Bxf4 42. Qh3 Rc1 43. Qg3 *
Position (FEN): 1k6/1p6/1p3p2/5P2/4pb2/6Q1/P5PP/2r2R1K b - - 3 43
Black to move.
Themes: Hanging Piece Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 997
Best move: Rxf1#