Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Bf5 5. Bg5 e6 6. Bxf6 Qxf6 7. a3 Bd6 8. h3
Nd7 9. e3 a6 10. c5 Bc7 11. Bd3 Bxd3 12. Qxd3 O-O 13. O-O e5 14. Qd2 e4 15. Ne1
Qh6 16. f4 f5 17. Qf2 Bd8 18. Nc2 Bh4 19. Qe2 Rf6 20. g4 fxg4 21. hxg4 Rg6 22.
Ne1 Qh5 23. g5 Nf6 24. Ng2 Ng4 25. b4 Bf2+ 26. Rxf2 Qh2+ 27. Kf1 *
Position (FEN): r5k1/1p4pp/p1p3r1/2Pp2P1/1P1PpPn1/P1N1P3/4QRNq/R4K2 b - - 2 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 899
Best move: Qh1#