Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O O-O 6. c3 d6 7. Nbd2 a6 8. Bb3
Ne7 9. Nc4 Ng6 10. Ne3 Nf4 11. Nf5 Bxf5 12. exf5 N6h5 13. d4 exd4 14. cxd4 Bb6
15. g4 Nh3+ 16. Kh1 N5f4 17. Be3 Qf6 18. Qd2 g5 19. fxg6 hxg6 20. g5 Qf5 21.
Qc2 Qg4 22. Ne1 Kg7 23. d5 Rh8 24. Qc3+ Kg8 25. Qf6 Bxe3 26. fxe3 Qg1+ 27. Rxg1
*
Position (FEN): r5kr/1pp2p2/p2p1Qp1/3P2P1/5n2/1B2P2n/PP5P/R3N1RK b - - 0 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 991
Best move: Nf2#