Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. Bb5+ Nc6 5. Nc3 Bd7 6. Nf3 a6 7. Be2 cxd4 8. Nxd4
Qb6 9. Nxc6 Bxc6 10. O-O Be7 11. Rb1 f6 12. Be3 Qc7 13. exf6 Nxf6 14. f4 O-O
15. Bd3 Rad8 16. Bd4 h6 17. Rf3 Bd6 18. Qf1 e5 19. fxe5 Bxe5 20. Bxe5 Qxe5 21.
Re1 Qd6 22. Qf2 d4 23. Ne4 Bxe4 24. Bxe4 Nxe4 25. Rxe4 Rxf3 26. Qxf3 Rf8 27.
Qd3 Qf6 28. Rxd4 Qf2+ 29. Kh1 Qf1+ 30. Qxf1 *
Position (FEN): 5rk1/1p4p1/p6p/8/3R4/8/PPP3PP/5Q1K b - - 0 30
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 437
Best move: Rxf1#