Chess puzzle (Checkmate)
Moves: 1. c4 Nf6 2. g3 d5 3. Bg2 dxc4 4. Qa4+ Bd7 5. Qxc4 Bc6 6. Nf3 e5 7. O-O Bd6 8.
d3 O-O 9. Bg5 h6 10. Bxf6 Qxf6 11. Nc3 Nd7 12. Rac1 Nb6 13. Qb3 a5 14. a3 a4
15. Qa2 Kh8 16. Rc2 Qg6 17. Rfc1 f5 18. Nh4 Qh5 19. Bxc6 bxc6 20. Nd1 e4 21.
Rxc6 f4 22. dxe4 fxg3 23. hxg3 Bxg3 24. Ng6+ Kh7 25. fxg3 Qxe2 26. Nxf8+ Rxf8
27. Qe6 *
Position (FEN): 5r2/2p3pk/1nR1Q2p/8/p3P3/P5P1/1P2q3/2RN2K1 b - - 1 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1498
Best move: Rf1#