Tarrasch Defense: Two Knights, Rubinstein, Prague, Carlsbad Variation

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.Qb3