Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. f4 exf4 3. Nf3 Bc5 4. d4 Bb6 5. Bxf4 Nc6 6. Bc4 d5 7. exd5 Nce7 8.
O-O Nxd5 9. Bb3 Ngf6 10. Bg5 Be6 11. Bxd5 Bxd5 12. Qe2+ Be6 13. c3 O-O 14. Ne5
c5 15. Bxf6 gxf6 16. Ng4 f5 17. Nh6+ Kg7 18. Qh5 Qf6 19. Nxf5+ Bxf5 20. Rxf5
Qe6 21. Nd2 Rg8 22. Raf1 Raf8 23. Qg4+ Kh8 24. Qh5 cxd4 25. cxd4 Bxd4+ 26. Kh1
Qg6 27. Qh4 *
Position (FEN): 5rrk/pp3p1p/6q1/5R2/3b3Q/8/PP1N2PP/5R1K b - - 3 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 851
Best move: Qxg2#