Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. Bc4 dxc4 3. c3 e5 4. Qa4+ Bd7 5. Qxc4 Nf6 6. d3 Bd6 7. Nf3 O-O 8.
Bg5 Be6 9. Qa4 Nbd7 10. Nbd2 a6 11. Qc2 b5 12. O-O c5 13. c4 b4 14. a3 a5 15.
Rfd1 h6 16. Bh4 g5 17. Nxg5 hxg5 18. Bxg5 Be7 19. Nf3 Nh7 20. Be3 f5 21. exf5
Bxf5 22. Qe2 Ng5 23. Bxg5 Bxg5 24. Nxe5 Nxe5 25. Qxe5 Qf6 26. Qxc5 Rac8 27.
Qxa5 Bxd3 28. Rxd3 Qxf2+ 29. Kh1 Qf1+ 30. Rxf1 *
Position (FEN): 2r2rk1/8/8/Q5b1/1pP5/P2R4/1P4PP/5R1K b - - 0 30
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 471
Best move: Rxf1#