Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Three_Knights_Variation
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Bg4 5. Ne5 Bf5 6. cxd5 cxd5 7. e4 dxe4 8.
Bb5+ Nbd7 9. O-O a6 10. Qb3 axb5 *
Position (FEN): r2qkb1r/1p1npppp/5n2/1p2Nb2/3Pp3/1QN5/PP3PPP/R1B2RK1 w kq - 0 11
White to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 666
Best move: Qxf7#