Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nf3 d5 3. Bg5 Ne4 4. Bh4 Bg4 5. e3 f6 6. Bd3 g5 7. Bg3 Nxg3 8. h3
Nxh1 9. hxg4 Nxf2 10. Kxf2 Bg7 11. Qh1 Nc6 12. Qh5+ Kd7 13. Bf5+ Kd6 14. c3 e6
15. Bc2 Qe7 16. Qh2+ e5 17. Na3 a6 18. b4 b5 19. Bf5 Rae8 20. Nb1 Qf7 21. Nbd2
h5 22. Nb3 hxg4 23. Bxg4 Rxh2 24. Nxh2 exd4 25. cxd4 Qe7 26. Nf1 Nxb4 27. Nc5
Nc6 *
Position (FEN): 4r3/2p1q1b1/p1nk1p2/1pNp2p1/3P2B1/4P3/P4KP1/R4N2 w - - 2 28
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1117
Best move: Nb7#