Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Zukertort_Variation
Moves: 1. Nf3 d5 2. d4 e6 3. Bf4 Nf6 4. Nbd2 Bd6 5. c3 *
Position (FEN): rnbqk2r/ppp2ppp/3bpn2/3p4/3P1B2/2P2N2/PP1NPPPP/R2QKB1R b KQkq - 0 5
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1020
Best move: Bxf4