Chess puzzle (Crushing)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Harrwitz_Attack
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 Bd6 5. Bg5 Bb4 6. Qb3 Na6 7. Qa3 *
Position (FEN): r1bqk2r/ppp2ppp/n3pn2/3p2B1/1bPP4/Q1N5/PP2PPPP/R3KBNR b KQkq - 9 7
Black to move.
Themes:  Opening  
Puzzle rating: 1005
Best move: Bxa3