Theoria
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Grünfeld Defense

Russian Variation, Hungarian Variation

D97positional

  1. 1.d4Nf6
  2. 2.c4g6
  3. 3.Nc3d5
  4. 4.Nf3Bg7
  5. 5.Qb3dxc4
  6. 6.Qxc4O-O
  7. 7.e4a6
222 games45%48%

Grünfeld Russian Variation line with 7...a6, preparing ...b5 to harass White's queen on c4; a balanced, Leko-endorsed alternative to 7...Bg4.

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About the Hungarian Variation

The Hungarian Variation answers White's broad center with the quiet 7...a6, preparing ...b5 to gain queenside space with tempo against the queen on c4 and to open a route for the light-squared bishop to b7. Peter Leko has championed it. White most often continues 8. Be2, while 8. e5 gains space at once and 8. Qb3 sidesteps ...b5. The engine rates the position as balanced, and Black has scored slightly better than White in the available games.

Popular continuations