Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Nf3 Nbd7 6. Ng5 b6 7. e4 Bb4 8. e5
Bxc3+ 9. bxc3 Ne4 10. Nxe4 dxe4 11. Bc4 Bb7 12. O-O O-O 13. e6 fxe6 14. Bxe6+
Kh8 15. d5 Nf6 16. c4 c6 17. Bg5 cxd5 18. cxd5 Qd6 19. Bxf6 Rxf6 20. Rc1 Rd8
21. Qa4 a6 22. Rfd1 Qe5 23. Rc4 Bxd5 24. Bxd5 b5 25. Rxe4 Qf5 26. Qd4 Rfd6 27.
Re5 Qc2 28. Rg5 Rf6 29. Qg4 Qxf2+ 30. Kh1 Qf1+ 31. Rxf1 *
Position (FEN): 3r3k/6pp/p4r2/1p1B2R1/6Q1/8/P5PP/5R1K b - - 0 31
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 400
Best move: Rxf1#