Chess puzzle (Checkmate)
Opening: Benko_Gambit_Declined, Benko_Gambit_Declined_Main_Line
Moves: 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 bxc4 5. Nc3 e6 6. e4 Ba6 7. e5 Nxd5 8. Nxd5
exd5 9. Qxd5 Nc6 10. Bxc4 Nb4 *
Position (FEN): r2qkb1r/p2p1ppp/b7/2pQP3/1nB5/5N2/PP3PPP/R1B1K2R w KQkq - 1 11
White to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 849
Best move: Qxf7#