Bogo-Indian Defense: Nimzowitsch Variation

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 5.g3 O-O 6.Bg2 Bxd2+ 7.Qxd2 d6 8.Nc3 e5 9.O-O