The King's Indian Defence: 1.d4 Nf6 2.c4... Nxd5 begins with 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5 (ECO D71). Lichess records 54,851 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 King's Indian Defense. On the White side, Zlatko Ilincic (51 games), Miroslaw Grabarczyk (27 games), Jiri Jirka (26 games) top the database. Notable Black exponents: Lubomir Ftacnik (27 games), Emil Sutovsky (15 games), Robert Kempinski (14 games).
Performance Across Rating Levels
The picture changes a lot as you climb the rating ladder. Among 1200-rated players, it appears in 0.00% of games — 852 of them on record — with White winning 51.2% and Black 44.5%. At 1800 the opening surfaces in 0.00% of games; White wins 50.5%, Black 44.2%, draws 5.4%. Among 2500-rated players the line appears in 0.02% of games and draws spike to 10.3%, indicating tight preparation. Positions also become less sharp as level rises (sharpness 0.96 → 0.90).
Move Diversity and Theory Depth
Looking at move selection shows how forcing — or not — the position really is. At 1200 Elo, the top reply is Nc3, played 29.7% of the time. There are 4 other moves seeing meaningful share, and 73.2% of games stick to established theory. Entropy: 2.49. By 2500, Nf3 dominates at 47.1% of replies; only 3 viable alternatives remain and 99.3% of moves are theory. Entropy drops to 1.31. The narrowing is significant — strong players consolidate around a small set of best moves, while amateurs scatter across many plausible-looking options.
Main Lines and Variations
After 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5, the established follow-ups are:
Each branch leads to a different middlegame character — the resulting pawn structure decides what kind of game you get.
Common Mistakes
- Drifting away from main theory — At 400 Elo, theory adherence sits at 62.1% — versus 96.4% at 2000. The most popular deviation is Bxd5 (played 17.2% of the time at 400, much less so up top). It looks fine but quietly hands the better-prepared side an edge.
- Neglecting development — Extra pawn moves in the opening are tempting, especially when you "know the moves". Developing a piece each turn is the simple correction.
- 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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