Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Marshall_Defense
Moves: 1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nb6 5. Nf3 e6 6. a3 Bd6 7. e5 Be7 8. Bg5
*
Position (FEN): rnbqk2r/ppp1bppp/1n2p3/4P1B1/3P4/P4N2/1P3PPP/RN1QKB1R b KQkq - 2 8
Black to move.
Themes:  Opening  
Puzzle rating: 1105
Best move: Bxg5