Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Leonardis_Variation
Moves: 1. e4 e5 2. d3 Bc5 3. Nf3 Nc6 4. Nc3 f5 5. Bg5 Nf6 6. Nd5 fxe4 7. Nxf6+ *
Position (FEN): r1bqk2r/pppp2pp/2n2N2/2b1p1B1/4p3/3P1N2/PPP2PPP/R2QKB1R b KQkq - 0 7
Black to move.
Themes:  Opening  
Puzzle rating: 981
Best move: gxf6