Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Quiet_Variation
Moves: 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 dxc4 6. Bxc4 a6 7. Qb3 Nbd7 *
Position (FEN): r2qkb1r/1p1npppp/p1p2n2/5b2/2BP4/1QN1PN2/PP3PPP/R1B1K2R w KQkq - 2 8
White to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 867
Best move: Bxf7#