Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Advance_Variation
Moves: 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Nf3 e6 6. Bg5 Ne7 7. Nbd2 Nd7 8. c4
dxc4 9. Nxc4 f6 *
Position (FEN): r2qkb1r/pp1nn1p1/2p1pp2/4PbBp/2NP3P/5N2/PP3PP1/R2QKB1R w KQkq - 0 10
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 836
Best move: Nd6#