Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Cambridge_Springs_Defense
Moves: 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c6 5. Bg5 Nbd7 6. e3 Qa5 7. Nd2 Bb4 8. Qc2
O-O 9. Bd3 *
Position (FEN): r1b2rk1/pp1n1ppp/2p1pn2/q2p2B1/1bPP4/2NBP3/PPQN1PPP/R3K2R b KQ - 6 9
Black to move.
Themes:  Middlegame  
Puzzle rating: 1638
Best move: dxc4