Chess puzzle (Advantage)
Opening: French_Defense, French_Defense_Rubinstein_Variation
Moves: 1. e4 e6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Bg5 Be7 6. Nxf6+ Bxf6 7. Nf3 *
Position (FEN): rnbqk2r/ppp2ppp/4pb2/6B1/3P4/5N2/PPP2PPP/R2QKB1R b KQkq - 1 7
Black to move.
Themes:  Opening  
Puzzle rating: 1027
Best move: Bxg5