Chess puzzle (Checkmate)
Moves: 1. e4 Nc6 2. Nf3 f5 3. exf5 d5 4. d4 Bxf5 5. Bd3 Nh6 6. Bxh6 Bxd3 7. Qxd3 gxh6
8. Qf5 Qd6 9. Nbd2 Bg7 10. Qh5+ Qg6 11. Qxd5 Qxc2 12. O-O Rd8 13. Qb5 O-O 14.
d5 Nd4 15. Nxd4 Bxd4 16. Nc4 a6 17. Qb4 Rxd5 18. Rac1 Qe2 19. Qxb7 Rdf5 20.
Qxc7 Rxf2 21. Rxf2 Qxf2+ 22. Kh1 Qf1+ 23. Rxf1 *
Position (FEN): 5rk1/2Q1p2p/p6p/8/2Nb4/8/PP4PP/5R1K b - - 0 23
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 613
Best move: Rxf1#