Chess puzzle (Checkmate)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Declined_Variation
Moves: 1. e4 Nc6 2. Nf3 g6 3. Bc4 Bg7 4. d3 e6 5. O-O Na5 6. c3 Nxc4 7. dxc4 c6 8. e5
Ne7 9. Bg5 Qb6 10. b3 Nf5 11. Bf6 O-O 12. Nbd2 Re8 13. Ne4 c5 14. g4 Nh6 15. h3
Kh8 16. Nd6 Rg8 17. g5 Nf5 *
Position (FEN): r1b3rk/pp1p1pbp/1q1NpBp1/2p1PnP1/2P5/1PP2N1P/P4P2/R2Q1RK1 w - - 1 18
White to move.
Themes: Kingside Attack Middlegame Mate in 1, Smothered Mate 
Puzzle rating: 706
Best move: Nxf7#