Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Symmetrical_Variation
Moves: 1. d4 d5 2. Nf3 Nf6 3. c4 Bg4 4. Nc3 c6 5. Ne5 Bf5 6. cxd5 cxd5 7. Qb3 Nc6 8.
e4 dxe4 *
Position (FEN): r2qkb1r/pp2pppp/2n2n2/4Nb2/3Pp3/1QN5/PP3PPP/R1B1KB1R w KQkq - 0 9
White to move.
Themes: Attacking f2 or f7 Opening Mate in 1 
Puzzle rating: 1010
Best move: Qxf7#