Related Openings
Nimzo-Indian - 4.e3, Keres Variation	d4, Nf6, c4, e6, Nc3, Bb4, e3, O-O, Nf3, d5, Bd3, c5, O-O, b6
Nimzo-Indian - 4.e3, Main line with ...c5	d4, Nf6, c4, e6, Nc3, Bb4, e3, O-O, Nf3, d5, Bd3, c5