Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. f4 Nxd4 7. Qxd4 Ne7 8.
Na3 Nf5 9. Qd3 a6 10. g4 Ne7 11. Bg2 Bd7 12. c4 dxc4 13. Nxc4 g6 *
Position (FEN): r2qkb1r/1p1bnp1p/p3p1p1/4P3/2N2PP1/3Q4/PP4BP/R1B1K2R w KQkq - 0 14
White to move.
Themes:  Middlegame Mate in 1, Smothered Mate 
Puzzle rating: 718
Best move: Nd6#