Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Slav_Gambit
Moves: 1. d4 d5 2. c4 dxc4 3. Nc3 c6 4. e4 e6 5. Bxc4 Bb4 6. Qb3 Bxc3+ 7. bxc3 Ne7 8.
Nf3 O-O 9. O-O Nd7 10. Ba3 Re8 11. Bxe6 fxe6 12. Qxe6+ Kh8 13. Ng5 Nf8 14. Nf7+
Kg8 15. Nh6+ Kh8 16. Qg8+ Nxg8 *
Position (FEN): r1bqrnnk/pp4pp/2p4N/8/3PP3/B1P5/P4PPP/R4RK1 w - - 0 17
White to move.
Themes:  Middlegame Mate in 1, Smothered Mate 
Puzzle rating: 685
Best move: Nf7#