Chess puzzle (Checkmate)
Moves: 1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e3 Nc6 6. Nf3 O-O 7. a3 h6 8. Bh4
dxc4 9. Bxc4 Nd5 10. Bxe7 Ncxe7 11. O-O a6 12. Rc1 b5 13. Bd3 Ng6 14. Bxg6 fxg6
15. Qd3 Bb7 16. Qxg6 Nxc3 17. Qxe6+ Kh8 18. Ne5 Ne2+ 19. Kh1 Nxc1 20. Rxc1 Qg5
21. d5 Rxf2 22. Nf7+ Rxf7 23. Qxf7 Bxd5 24. Qf2 Kh7 25. Rxc7 Rf8 26. Qe2 Qxg2+
27. Qxg2 *
Position (FEN): 5r2/2R3pk/p6p/1p1b4/8/P3P3/1P4QP/7K b - - 0 27
Black to move.
Themes: Pin Endgame Mate in 1 
Puzzle rating: 1260
Best move: Rf1#