About this opening
Queen's Indian Defense: Anti-Queen's Indian System is an opening in the Encyclopedia of Chess Openings,
classified under code E17. ECO group E (E00–E99)
covers Indian defences against 1.d4, covering the Nimzo-Indian, Queen's Indian, King's Indian and Catalan systems. This particular variation is reached
after 11 half-moves from the
starting position, with the move sequence 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3.
It belongs to the Queen's Indian Defense family. Within that family this is a sub-variation (the Anti-Queen's Indian System line).
The opening sequence in prose form: 1.d4 Nf6, 2.c4 e6, 3.Nf3 b6, 4.g3 Bb7, 5.Bg2 Be7, 6.Nc3. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.