Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 c6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 e5 7. Nf3 Bd6 8.
Bc4 Bg4 9. h3 Bxf3 10. Qxf3 exd4 *
Position (FEN): rn1qk2r/pp3ppp/2pb4/8/2BpP3/2P2Q1P/P4PP1/R1B1K2R w KQkq - 0 11
White to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 992
Best move: Qxf7#