Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Leonardis_Variation
Moves: 1. e4 e5 2. d3 Nf6 3. f4 exf4 4. Bxf4 Bc5 5. Nf3 O-O 6. h3 Nh5 7. Nc3 *
Position (FEN): rnbq1rk1/pppp1ppp/8/2b4n/4PB2/2NP1N1P/PPP3P1/R2QKB1R b KQ - 2 7
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1331
Best move: Nxf4