:
E20 Nimzo-Indian Defence: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4
E21 Nimzo-Indian, Three knights variation: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3
E22 Nimzo-Indian, Spielmann Variation: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3
E23 Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6
E24-29
Nimzo-Indian, Sämisch Variation: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3
E30 Nimzo-Indian, Leningrad Variation: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5
E31 Nimzo-Indian, Leningrad Variation, main line: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5
6.d5 d6
E32-39
Nimzo-Indian, Classical Variation: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2
E40-59
Nimzo-Indian, 4.e3: 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3
