Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Bf4 d6 3. e3 g6 4. Nf3 Bg7 5. c4 d5 6. cxd5 Nxd5 7. Bg3 Nc6 8. Bb5
O-O 9. O-O Bg4 10. Bxc6 bxc6 11. Nc3 Nxc3 12. bxc3 f6 13. e4 e5 14. Qd3 Bxf3
15. Qxf3 exd4 16. cxd4 Qxd4 17. Bxc7 Qd7 18. Bf4 f5 19. Rad1 Qe8 20. Rfe1 fxe4
21. Qxe4 Qf7 22. Bg3 c5 23. Qd5 Qxd5 24. Rxd5 Bd4 25. Rf1 Rab8 26. Be5 Bxf2+
27. Rxf2 Rb1+ 28. Rf1 *
Position (FEN): 5rk1/p6p/6p1/2pRB3/8/8/P5PP/1r3RK1 b - - 2 28
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 621
Best move: Rbxf1#