Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. g3 Bb7 7. Bg2 Qc7 8. O-O
Nf6 9. Bg5 Bc5 10. Bxf6 gxf6 11. Nb3 Bb6 12. Qh5 Nc6 13. Rad1 O-O-O 14. Qxf7
Rdf8 15. Qh5 f5 16. exf5 Rxf5 17. Qh4 Rhf8 18. Ne4 d5 19. Nec5 Qf7 20. Bh3 Ne5
21. Bxf5 Nf3+ 22. Kh1 Nxh4 23. Bxe6+ Qxe6 24. Nxe6 d4+ 25. Kg1 Nf3+ 26. Kg2
Ng5+ 27. Kg1 *
Position (FEN): 2k2r2/1b5p/pb2N3/1p4n1/3p4/1N4P1/PPP2P1P/3R1RK1 b - - 5 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1422
Best move: Nh3#