1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 Bb4 opens the Queen's Indian Defense: Kasparov Variation, ECO E13. Lichess records 44,686 games in this line, which gives us a reliable view of how it actually performs in practice.
History and Notable Players
It arises from the Queen's Indian Defense. Among the most prolific White practitioners are Boris Chatalbashev (7 games), Ivan Farago (5 games), Vladimir P Malaniuk (5 games). Black-side regulars include Ivan Farago (10 games), Ruslan Pogorelov (6 games), Edvins Kengis (6 games).
Move Diversity and Theory Depth
Move choice is far from uniform in the Queen's Indian Defense: Kasparov Variation. At 1200 Elo (644 games), the top reply is e3, played 49% of the time. Three other moves each take at least 5% of games, and the top three moves account for 79.8% of games. Entropy: 2.33. By 2500 (940 games), e3 dominates at 68% of replies; only two other moves still reach 5% and the top three moves account for 91.4% of games. Entropy drops to 1.52. The narrowing is significant — strong players consolidate around a small set of best moves, while amateurs scatter across many plausible-looking options.
Common Mistakes
- Drifting away from main theory — At 1000 Elo, the three most-played moves cover 68.2% of games, against 86.6% at 2000. The most popular deviation is a3 (played 16.8% of the time at 1000, much less so up top). It looks fine but quietly hands the better-prepared side an edge.
- Neglecting development — It can feel productive to make extra pawn moves early, but falling behind in piece development is what loses most amateur games — especially in open positions where active pieces find squares fast.
- Letting White own the centre — Hypermodern openings concede central space on purpose, but only if you strike back in time. Delay the counter-blow and you end up squeezed.
Practice on Chessiverse
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