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E11Opening

Bogo-Indian Defense

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+

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White to move

Legal moves
5
Games in the next 4 moves
127,979
Different positions among them
72,571
Named lines from here
11

See it on the mapOn the opening map

Named after Efim Bogoljubov: 3...Bb4+ checks at once, to trade the dark-squared bishop or disturb White’s development.

It is reached after 6 moves: 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+.

White is to move and has 5 legal moves. Over the next four moves — two for each side — the game can branch into 127,979 different games. Those games reach 72,571 different positions: most positions can be reached in more than one way, 1.8 on average.

The Lichess opening list names 11 further lines after this position, such as Grünfeld Variation (4. Nbd2) and Wade-Smyslov Variation (4. Bd2 a5).

The same moves can be played in 12 different legal orders that all reach this position. For example 1. c4 Nf6 2. d4 e6 3. Nf3 Bb4+, which starts as the English Opening.

Map of every game of the next four moves after the Bogo-Indian Defense
Every game of the next four moves from this position, as the map draws it. Each ring is one more move; the outer ring holds all 127,979 games.

Move by move

  1. 1. d4Queen's Pawn Game
  2. 1... Nf6Indian Defense
  3. 2. c4Indian Defense: Normal Variation
  4. 2... e6—
  5. 3. Nf3Indian Defense: Anti-Nimzo-Indian
  6. 3... Bb4+Bogo-Indian Defense

Named lines from here

Related openings

FEN

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