Grünfeld-Indian Defense

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	a	b	c	d	e	f	G	H

Classic basic position of the Grünfeld-Indian defense after 3.… d7 – d5

The Grünfeld-Indian Defense is an opening of the game of chess . In the ECO codes it is classified under the codes D70 to D99.

The Grünfeld-Indian Defense is a closed game . It emerged from the Indian Defense and was named after the Austrian Grand Master Ernst Grünfeld .

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

The move sequence 1. d2 – d4 Ng8 – f6 2. c2 – c4 g7 – g6 3. g2 – g3 d7 – d5 is called the Grünfeld-Indian defense. In addition, the opening can be reached via various train changes . For example: 3. Ng1-f3 Bf8-g7 4. g2-g3 0-0 5. Bf1-g2 c7-c6 6. 0-0 d7-d5 .

Typically, white gains a powerful pawn center and space advantage . The player pulling up tries to attack the white center and wants to use his pawn majority on the queenside to form a distant passed pawn in the endgame .

The Grünfeld Indian Defense was used by a number of world champions (including Vasily Smyslow , Bobby Fischer and Garri Kasparow ). Among the current top players, Peter Svidler is an expert in this variant.

The main variants

The main variants of the Grünfeld-Indian defense include:

after 3rd Nb1 – c3 d7 – d5:

• the exchange variant 4. c4xd5 Nf6xd5 5. e2 – e4 Nd5xc3 6. b2xc3 Bf8 – g7
  • in its modern form with 7. Ng1 – f3
    • 7. Ng1-f3 c7-c5 8. Ta1-b1
  • Classic form 7. Bf1 – c4 and 8. Ng1 – e2
    • 7. Bf1-c4 c7-c5 8. Ng1-e2 c5xd4 9. c3xd4 Nb8-c6 10. Bc1-e3 0-0 11. 0-0
    • 7. Bf1 – c4 c7 – c5 8. Ng1 – e2 0–0 9. 0–0 Nb8 – c6 10. Bc1 – e3 Bc8 – g4 11. f2 – f3 Nc6 – a5 12. Bc4xf7 + was played by Anatoli Karpov in the WM -The Karpov-Kasparov competition was used in Seville in 1987 and has been called the Seville variant since then.
  • Fischer treated the classic exchange variant, as popularized by Smyslow, with 8. Ng1 – e2 0–0 9. 0–0 Nb8 – c6 10. Bc1 – e3 Qd8 – c7 (10.… Bc8 – d7 is a similar approach ) 11. Ta1-c1 Rf8-d8.
  • In the 1990 World Cup match between Karpov and Kasparov, Karpov covered his center with 7th Bc1 – e3 c7 – c5 8th Qd1 – d2 in an endgame-oriented way that after the active Qd8 – a5 can lead to an exchange of queens.
• 4. Bc1 – f4 Bf8 – g7 5. e2 – e3 0–0 leads to the pawn sacrifice 6. c4xd5 Nf6xd5 7. Nc3xd5 Qd8xd5 8. Bf4xc7
• 4. e2 – e3 Bf8 – g7 5. Qd1 – b3 is the Knezevic variation.
• 4. Ng1-f3 Bf8-g7 5. Bc1-f4 0-0
• The Russian system 4. Ng1 – f3 Bf8 – g7 5. Qd1 – b3 d5xc4 6. Qb3xc4 0–0 7. e2 – e4.
  • Smyslow developed the structure 7.… Bc8 – g4 8. Bc1 – e3 Nf6 – d7 and Nb6 with pressure against d4.
  • The Hungarian variant 7.… a7 – a6 is ready for the pawn sacrifice 8. Bc1 – f4 b7 – b5 9. Qc4xc7 Qd8xc7 10. Bf4xc7 Bc8 – b7 with pressure on e4.
  • The position after 7. Bc1 – f4 c7 – c6 was created by changing the move in the game of the century .

After 3. g2 – g3:

• in the variant 3.… d7 – d5 4. c4xd5 Nf6xd5 5. Bf1 – g2 Bf8 – g7 White can either continue with 6. Ng1 – f3 or the king knight with 6. e2 – e4 Nd5 – b6 7. Ng1 – e2 after e2 develop.
• alternatively, Black can use the closed system with 3.… Bf8 – g7 4. Ng1 – f3 0–0 5. Bf1 – g2 c7 – c6 6. 0–0 d7 – d5 . The symmetrical position after 7. c4xd5 c6xd5 was often seen in Anatoly Karpov's games , while Boris Awruch's popular opening books recommended 7. b2 – b3.

literature

• Anatoli Karpow: Victories with Grünfeld-Indian. Rau, 1992, ISBN 3-7919-0453-1 .
• Boris Awruch : Grünfeld-Indian . Vol. 1 (= grandmaster repertoire 8). Glasgow: Quality Chess, 2011, ISBN 978-3-942383-71-4 .

Individual evidence

1. ↑ Boris Awruch: 1. d4 Volume Two Quality Chess, London 2010.
2. ↑ Boris Awruch: 1. d4 Volume Two Quality Chess, London 2010.