Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be3 O-O 6. Bd3 e5 7. Nge2 Ng4 8. O-O
Nxe3 9. fxe3 Qg5 10. Qc1 Bh6 11. Nd1 Bh3 12. Ng3 Bg4 13. Be2 Nc6 14. d5 Ne7 15.
Bxg4 Qxg4 16. Qc2 b6 17. a4 a5 18. b3 Bg5 19. Rf3 f5 20. Nf2 Qh4 21. exf5 Nxf5
22. Nxf5 Rxf5 23. Rxf5 gxf5 24. Qxf5 Rf8 25. Qe6+ Kh8 26. Ng4 h5 27. Nh6 Qf2+
28. Kh1 Qf1+ 29. Rxf1 *
Position (FEN): 5r1k/2p5/1p1pQ2N/p2Pp1bp/P1P5/1P2P3/6PP/5R1K b - - 0 29
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 600
Best move: Rxf1#