The Bogo-Indian Defence begins with 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ (ECO E11). With 2,179,516 games on record, the patterns below come from the largest practical sample available.
History and Notable Players
It arises from the Indian Defence: 1.d4 Nf6 2.c4... 3.Nf3. On the White side, Ivan Farago (89 games), Zdenko Kozul (71 games), Loek Van Wely (57 games) top the database. Notable Black exponents: Ulf Andersson (130 games), Viktor Korchnoi (84 games), Milan Drasko (84 games).
Performance Across Rating Levels
Popularity and results vary sharply by rating level. The 1200 bracket has 73,188 games (0.01% of all games at that level); White wins 51.3%, Black 45%, 3.7% are drawn. At 1800 the opening surfaces in 0.05% of games; White wins 50%, Black 44.4%, draws 5.6%. At the top end (2500+ Elo), popularity is 0.52% with 10.8% draws — a clear sign of how much theory rules the line at master level. White's edge erodes by 3.8pp from 1200 to 2500 Elo, suggesting Black's counterplay is easier to find with experience.
Time Control Patterns
The Bogo-Indian Defence skews toward blitz chess. In bullet, it appears in 0.04% of games (981,689); White wins 50.5%. Blitz shows 0.05% adoption across 1,873,200 games, White scoring 49.3%. In rapid, the share rises to 0.03% — 302,087 games, White 49.7%.
Move Diversity and Theory Depth
What players actually play after the opening moves depends heavily on rating. At 1200 Elo, the top reply is Bd2, played 49.4% of the time. There are 3 other moves seeing meaningful share, and 99.7% of games stick to established theory. Entropy: 1.31. By 2500, Bd2 dominates at 57.3% of replies; only 3 viable alternatives remain and 99.9% of moves are theory. Entropy drops to 1.23. Even elite players don't fully agree on the best continuation here, which keeps the position dynamic.
Common Mistakes
- 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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