Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 a6 5. a4 e6 6. Ba2 Nbd7 7. c4 b6 8. Nc3 Be7
9. O-O Bb7 10. b3 O-O 11. e5 dxe5 12. Re1 Qc7 13. Ne4 Rad8 14. Bb2 Nxe4 15. Qe2
Nef6 16. Nxe5 Nxe5 17. Qxe5 Qc6 18. f3 Bd6 19. Qg5 h6 20. Qh4 Bc7 21. Bxf6 gxf6
22. Qxf6 Kh7 23. Bb1 Rd4 24. Re4 Rg8 25. Qxf7+ Rg7 26. Qf6 Bd8 27. Qf8 Be7 28.
Qf4 Qd7 29. Rxd4 cxd4 30. Bc2 e5 31. Qd2 Bxf3 32. Kf1 Bh5 33. Bd1 Rf7+ 34. Kg1
Bg5 35. Qc2 Bg6 36. Bf3 Qf5 37. Be4 Be3+ 38. Kh1 Qf1+ 39. Rxf1 *
Position (FEN): 8/5r1k/pp4bp/4p3/P1PpB3/1P1Pb3/2Q3PP/5R1K b - - 0 39
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 645
Best move: Rxf1#