Grünfeld Defence

In the Grünfeld Indian Defence is a chess opening of the game.

The Grünfeld Indian Defence is one of the closed-end games. It is apparent from the Indian defense and was named after the Austrian Grand Master Ernst Grünfeld.

The opening is characterized by black moves first ... Ng8 - f6, g7- g6 2 ... d7 -d5 followed by. The classic basic position arises after 1 d2 -d4 Ng8 - f6 2 c2 - c4 g7- g6 3 Nb1 - c3 d7 -d5.

Also, the move order 1 d2 -d4 Ng8 - f6 2 c2 - c4 g7- g6 3 g3 g2 - d7 -d5 is referred to as green box -Indian defense. Additionally, the opening through various transpositions can be achieved. For example: 3 Sg1 -f3 Bf8 - g7 4 g2 - g3 0-0 5 Lf1 - c7 - c6 g2 6 0-0 d7 -d5.

Typically, White provides a powerful peasant center and space advantage. The second player tries to attack possibilities against the white center and wants to make a passed pawn away from his queenside pawn majority in the endgame.

The Grünfeld Indian Defence has been used by a number of world champions ( including Vasily Smyslov, Bobby Fischer and Garry Kasparov ).

The main variants

The main variants of the Grünfeld Indian Defence include:

After 3 Nb1 - c3 d7 -d5:

  • The Exchange Variation 4 c4xd5 Sf6xd5 5 e2 -e4 Sd5xc3 6 b2xc3 Bf8 - g7 in its modern form with 7 Sg1 -f3 7 Sg1 -f3 c7 - c5 8 Ta1 -b1
  • 7 Lf1 c4 - c7 - c5 8 Sg1 - e2 c5xd4 9 c3xd4 Sb8 c6 - 10 Lc1 -e3 0-0 11 0-0
  • 7 Lf1 c4 - c7 - c5 8 Sg1 - e2 0-0 9 0-0 Sb8 c6 - 10 Lc1 -e3 - g4 Bc8 11 f2 -f3 Nc6 - a5 12 Lc4xf7 was developed by Anatoly Karpov in the World Cup competition Karpov - Kasparov 1987 applied in Seville and Seville variant is called ever since.
  • Smyslov developed building 7 ... Bc8 - g4 -e3 Nf6 8 Lc1 - d7 plus Sb6 with pressure against d4.
  • The Hungarian version 7 ... a6 a7 - pawn is on the 8th Lc1 - f4 b5 b7 - 9 Dc4xc7 Dd8xc7 10 Lf4xc7 Bc8 - b7 with pressure against e4 ready.
  • The position after 7 Lc1 - f4 c6 c7 - created by diverter in the match of the century.

After 3 g2 - g3:

  • In the variant 3 ... d7 -d5 4 c4xd5 Sf6xd5 5 Lf1 - g2 Bf8 - g7, White can either continue with 6 Sg1 -f3 or the King Knight by 6 e2 -e4 Nd5 - b6 7 Sg1 - e2 by e2 develop.
  • Alternatively, Sg1 -f3 0-0 5 Lf1 - c7 - c6 g2 6 0-0 d7 -d5 access to the closed system black with 3 ... Bf8 - g7 4. The symmetrical position after 7 c4xd5 c6xd5 was often seen in the games Anatoly Karpov, while recommended in Boris Awruchs popular opening books 7 b2 -b3.
Transposition (chess) The Game of the Century (chess)
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