Chess puzzle (Checkmate)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Williams_Variation
Moves: 1. e4 d6 2. Nf3 Nc6 3. Bc4 Bg4 4. Nc3 Nd4 5. Ne5 Bxd1 *
Position (FEN): r2qkbnr/ppp1pppp/3p4/4N3/2BnP3/2N5/PPPP1PPP/R1BbK2R w KQkq - 0 6
White to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 1193
Best move: Bxf7#