Chess puzzle (Checkmate)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. c4 h6 3. Nc3 Ne7 4. e4 c6 5. Nf3 d5 6. g3 dxe4 7. Nxe4 Nd7 *
Position (FEN): r1bqkb1r/pp1nnpp1/2p1p2p/8/2PPN3/5NP1/PP3P1P/R1BQKB1R w KQkq - 1 8
White to move.
Themes:  Opening Mate in 1, Smothered Mate 
Puzzle rating: 816
Best move: Nd6#