Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 cxd4 5. cxd4 Nc6 6. Nf3 Nge7 7. a3 Nf5 8. g4
Nfe7 9. Nc3 Ng6 10. h4 Bd7 11. h5 Nge7 12. Nb5 a6 *
Position (FEN): r2qkb1r/1p1bnppp/p1n1p3/1N1pP2P/3P2P1/P4N2/1P3P2/R1BQKB1R w KQkq - 0 13
White to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 1003
Best move: Nd6#