Queen's Gambit Declined: Exchange, Positional Line

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Nf3 Be7 7.e3 Bf5 8.Bd3 Bxd3 9.Qxd3 Nbd7 10.O-O O-O