Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. Be2 d6 6. O-O Nc6 7. c4 Nh5 8. Bg5
f6 9. Bh4 g5 10. Bg3 g4 11. Nfd2 f5 12. Nc3 Nf6 13. Qb3 Kh8 14. d5 Ne5 15. e4
h5 16. exf5 Bxf5 17. Bh4 Ng6 18. Bxf6 Rxf6 19. Nde4 Bxe4 20. Nxe4 Rf4 21. Bd3
Ne5 22. Qc2 Qg8 23. Ng5 Raf8 24. Ne6 Nf3+ 25. gxf3 gxf3 26. Nxf8 Bxf8+ 27. Kh1
*
Position (FEN): 5bqk/ppp1p3/3p4/3P3p/2P2r2/3B1p2/PPQ2P1P/R4R1K b - - 1 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 995
Best move: Qg2#