ECO E12 · Queen's Indian Defense
Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line
The position after 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Bb7 5.Nc3 d5.
1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5
Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line is filed under ECO E12, a variation of Queen's Indian Defense: Kasparov-Petrosian Variation. It is the position after 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Bb7 5.Nc3 d5 — 10 half-moves in, with White to move. Named theory ends here; beyond this the position is yours to work out.