Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. Nc3 dxe4 3. Nxe4 c6 4. Nf3 Nd7 5. Qe2 Ngf6 *
Position (FEN): r1bqkb1r/pp1npppp/2p2n2/8/4N3/5N2/PPPPQPPP/R1B1KB1R w KQkq - 4 6
White to move.
Themes: Pin Opening Mate in 1, Smothered Mate 
Puzzle rating: 1140
Best move: Nd6#