Queen's Gambit Declined: Semi-Tarrasch, Main Line, Exchange Variation

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4+ 9.Bd2 Bxd2+ 10.Qxd2 O-O 11.Bc4 Nd7 12.O-O b6 13.Rfe1 Bb7 14.Rad1 Rc8 15.Bb3