A47Queen's Indian Defence
1.d4 Nf6 2.Nf3 b6
A47Queen's Indian Defence
Marienbad System
1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5
A47Queen's Indian Defence
Marienbad System, Berg Variation
1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5 5.c4 cxd4 6.Qxd4