Chess puzzle (Checkmate)
Moves: 1. d4 c5 2. e3 cxd4 3. exd4 d6 4. Nf3 a6 5. Bd3 e6 6. O-O Ne7 7. Re1 Ng6 8. c4
Be7 9. Nc3 O-O 10. b3 Qc7 11. Bb2 Nd7 12. d5 e5 13. h4 f5 14. h5 Nf4 15. Bf1
Nf6 16. h6 gxh6 17. g3 N4h5 18. Bh3 Kh8 19. Qd2 Rg8 20. Qxh6 Rg6 21. Qd2 Qd8
22. Nh4 Rg8 23. Bxf5 Bxf5 24. Nxf5 Qe8 25. c5 Qg6 26. Nxe7 Qg4 27. Nxg8 Rxg8
28. Ne2 Qh3 29. cxd6 Ng4 30. Bxe5+ Nxe5 31. Nf4 *
Position (FEN): 6rk/1p5p/p2P4/3Pn2n/5N2/1P4Pq/P2Q1P2/R3R1K1 b - - 1 31
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1289
Best move: Nf3#