Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 Nf6 2. c4 d5 3. cxd5 Qxd5 4. Nc3 Qd8 5. Nf3 Bf5 6. Ne5 Nbd7 7. Qa4 c6 8.
Bf4 Nb6 9. Qb3 Nfd5 10. e4 Nxc3 *
Position (FEN): r2qkb1r/pp2pppp/1np5/4Nb2/3PPB2/1Qn5/PP3PPP/R3KB1R w KQkq - 0 11
White to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 1149
Best move: Qxf7#