E41Nimzo-Indian Defence
4.e3 c5
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5
E41Nimzo-Indian Defence
e3, Huebner Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3 7.bxc3 d6