Bogo-Indian Defense: Nimzowitsch Variation

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 5.g3 Nc6 6.Bg2 Bxd2+ 7.Nbxd2 d6 8.O-O a5 9.e4 e5 10.d5 Nb8 11.Ne1 O-O