Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Nf3 e5 7. Be2 Nc6 8. d5 Ne7
9. Be3 a5 10. O-O Ne8 11. Qd2 f5 12. Bh6 f4 13. Bxg7 Kxg7 14. c5 Ng8 15. a3 h5
16. h4 Nh6 17. b4 Ng4 18. Ng5 Nef6 19. Nb5 Nh7 20. Nxh7 Qxh4 21. Bxg4 hxg4 22.
Nxf8 g3 23. Rfc1 Bg4 24. f3 Qh2+ 25. Kf1 Bxf3 26. Ne6+ Kf6 27. Nxf4 *
Position (FEN): r7/1pp5/3p1kp1/pNPPp3/1P2PN2/P4bp1/3Q2Pq/R1R2K2 b - - 0 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1257
Best move: Qh1#