Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Ng4 7. Bb5 Nxe3 8.
fxe3 Bd7 9. O-O g6 10. Bxc6 bxc6 11. Qf3 f6 12. e5 dxe5 13. Nxc6 Qc8 14. Nb4
Rb8 15. Nbd5 Bg7 16. Rab1 Qd8 17. Rfd1 O-O 18. Rd2 e6 19. Rbd1 exd5 20. Rxd5
Rf7 21. Qh3 f5 22. e4 Qb6+ 23. Kh1 Be6 24. Rd6 Qxb2 25. Rxe6 Qxc2 26. exf5 Rc8
27. fxg6 Qxd1+ 28. Nxd1 *
Position (FEN): 2r3k1/p4rbp/4R1P1/4p3/8/7Q/P5PP/3N3K b - - 0 28
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 779
Best move: Rf1#