E23Nimzo-Indian Defence
Spielmann, 4...c5, 5.dc Nc6
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6
E23Nimzo-Indian Defence
Spielmann, Karlsbad Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxd2
E23Nimzo-Indian Defence
Spielmann, San Remo Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxc5
E23Nimzo-Indian Defence
Spielmann, Staahlberg Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxc5 8.Qc2 f5 9.g3