D19 Queen's Gambit Declined Slav, Dutch (1 d4 d5 2 c4 c6 3 Nf3 Nf6 4 Nc3 dxc4 5 a4 Bf5 6 e3 e6 7 Bxc4 Bb4 8 O-O O-O 9 Qe2)