Chess puzzle (Checkmate)
Moves: 1. f4 g6 2. e4 Bg7 3. d4 d5 4. e5 Nc6 5. Nf3 Bf5 6. Nc3 e6 7. a3 Nh6 8. h3 a6
9. Qe2 Na5 10. g4 Be4 11. Nxe4 dxe4 12. Qxe4 O-O 13. Bd2 Nc4 14. Bxc4 c6 15.
O-O-O Qb6 16. Bb4 Rfd8 17. Rhg1 a5 18. Bc5 Qc7 19. Ng5 b6 20. Bd6 Rxd6 21. exd6
Qxd6 22. c3 b5 23. Bxb5 f5 24. Qxc6 Qxf4+ 25. Kb1 Rb8 26. Qxe6+ Kh8 27. gxf5
Nxf5 28. Nf7+ Kg8 29. Nh6+ Kh8 30. Qg8+ Rxg8 *
Position (FEN): 6rk/6bp/6pN/pB3n2/3P1q2/P1P4P/1P6/1K1R2R1 w - - 0 31
White to move.
Themes:  Middlegame Mate in 1, Smothered Mate 
Puzzle rating: 645
Best move: Nf7#