Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Accelerated_London_System
Moves: 1. d4 d5 2. Bf4 Nc6 3. Nf3 f6 4. e3 g5 5. Bxg5 *
Position (FEN): r1bqkbnr/ppp1p2p/2n2p2/3p2B1/3P4/4PN2/PPP2PPP/RN1QKB1R b KQkq - 0 5
Black to move.
Themes:  Opening  
Puzzle rating: 860
Best move: fxg5