← Queen's Indian Defense

Practice: Main Line

Fianchetto control of e4

Both sides fianchetto. White controls the centre from afar; Black's Bb7 contests the long diagonal. A sophisticated, strategically rich opening.

1. d4 Nf6
2. c4 e6
3. Nf3 b6
4. g3 Bb7
5. Bg2 Be7
6. O-O O-O
♟

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Key strategic ideas

  • Black places the light-squared bishop on b7, controlling e4 from a distance instead of occupying the centre with pawns.
  • White often plays b3 and Bb2 to mirror Black's setup. The game becomes a quiet strategic battle where small advantages matter.
  • The ...Ba6 line is a sharp attempt to trade light-squared bishops. This reduces White's attacking potential and makes Black's position easier to play.

Common mistakes & traps

  • After 4.a3 Ba6 5.Qc2 Bb7 6.Nc3 c5 7.e4, Black must not play passively. If Black tries 7...Nxe4? 8.Nxe4 d5, White can defend with the queen on c2 and come out ahead.
  • The Fianchetto Variation (4.g3) seems quiet, but Black who plays ...d5 carelessly can end up in a bad position. The Bg2 puts lasting pressure on the queenside.

Pawn structure notes

The structure is flexible with Black's pawns on d5 and e6. White's centre (d4-c4) faces pressure from the b7 bishop. The tension in the centre can last well into the middlegame.

Tips

  • Both sides complete fianchettoes - piece activity on the long diagonals is key
  • White often plays c5 or d5 to challenge Black's central influence
  • Petrosian, Karpov, and Kramnik have all used the Queen's Indian with great success

About this line

This line is rated intermediate. Practice it repeatedly until you can play the entire sequence without thinking. The in-app trainer tracks your perfect streaks and celebrates milestones.