Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Other_variations
Moves: 1. e4 c6 2. f4 d5 3. e5 a6 4. d4 g6 5. Nf3 Bg4 6. c4 e6 7. Be2 Nd7 8. Nc3 Bxf3
9. Bxf3 dxc4 10. Ne4 Rc8 11. O-O Ne7 *
Position (FEN): 2rqkb1r/1p1nnp1p/p1p1p1p1/4P3/2pPNP2/5B2/PP4PP/R1BQ1RK1 w k - 4 12
White to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 901
Best move: Nd6#