All ECO Codes
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E14
Queen's Indian Defence
4.e3
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3
E14
Queen's Indian Defence
Averbakh Variation
1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 c5 6.O-O Be7 7.b3 O-O 8.Bb2 cxd4 9.Nxd4