1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.0-0 Nc6 8.d5 Ne7 9.Ne1 opens the King's Indian Defence: 1.d4 Nf6 2.c4... 9.Ne1, ECO E98. Across rating levels it shows up in 368,726 recorded games — enough data to map exactly where it succeeds and where it stalls.
History and Notable Players
It arises from the King's Indian Defence: 1.d4 Nf6 2.c4... Nc6. Among the most prolific White practitioners are Zdenko Kozul (51 games), Ruslan Pogorelov (50 games), Viktor Korchnoi (42 games). Black-side regulars include Wolfgang Uhlmann (25 games), Friso Nijboer (24 games), Mark L Hebden (22 games).
Performance Across Rating Levels
Popularity and results vary sharply by rating level. The 1200 bracket has 185 games (0.00% of all games at that level); White wins 55.1%, Black 37.8%, 7% are drawn. Move up to 1800 Elo and the share shifts to 0.01%, with White winning 53.8% versus Black's 42.1%. Among 2500-rated players the line appears in 0.10% of games and draws spike to 7%, indicating tight preparation.
Move Diversity and Theory Depth
Move choice is far from uniform in the King's Indian Defence: 1.d4 Nf6 2.c4... 9.Ne1. At 1200 Elo, the top reply is Nd7, played 44.3% of the time. There are 3 other moves seeing meaningful share, and 80.3% of games stick to established theory. Entropy: 2.45. By 2500, Nd7 dominates at 72.3% of replies; only 2 viable alternatives remain and 96.4% of moves are theory. Entropy drops to 1.19. That entropy collapse is the signature of a line where preparation pays off: at the top, players know the best move and play it.
Historical Trends
Year-over-year data tells you whether this opening is a contemporary fixture or a fading one. Adoption peaked in 2018 at 0.01% (24,250 games). By 2025 it sits at 0.01% — a 7% shift overall, leaving the line flat.
Main Lines and Variations
After 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.0-0 Nc6 8.d5 Ne7 9.Ne1, 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
- 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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