Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. c4 dxc4 3. e3 c6 4. Bxc4 Nf6 5. Nc3 Bg4 6. Qb3 Nbd7 *
Position (FEN): r2qkb1r/pp1npppp/2p2n2/8/2BP2b1/1QN1P3/PP3PPP/R1B1K1NR w KQkq - 5 7
White to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 740
Best move: Bxf7#