Bogolyubov-Indian Defense
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The basic position of the Bogolyubov-Indian defense after 3.… Bf8 – b4 +
The Bogoljubow-Indian Defense (also short: Bogo-Indian ) is an opening of the game of chess . It is one of the closed games and is named after Efim Bogoljubow , a Russian-German world-class player in the first half of the 20th century . Your ECO code is E11.
Each of its variants begins with the trains
1. d2 – d4 Ng8 – f6
2. c2 – c4 e7 – e6
3. Ng1 – f3 Bf8 – b4 +
The original positional idea of Bogo-Indisch is to swap the black-squared bishops in order to oppose each other with d7 – d6 and e6 – e5 in the center and to fix the white center pawns on white squares, namely on e4 and d5. A white-squared runner from white would then be slightly worse than the white-squared runner from black. So it's about the strategic concept of "good runner vs. bad runner".
Another setup for Black could be b7 – b6, Bc8 – b7, Nf6 – e4, f7 – f5 and an attack on the king according to the Dutch pattern with 0–0, Rf8 – f6, Rf6 – h6.
Main variants
After 3.… Bf8 – b4 + the main lines are divided:
- 4. Lc1-d2
In addition to the immediate 4. ... Lb4xd2 + the defending runner b4 can with 4. ... c7-c5 or be covered 4. ... a7-a5, because the re-take on b4 with a pawn for black space on the queenside entails.
After 4.… c7 – c5 (an idea of the Latvian IM Alvis Vītoliņš (1946–1997)) 5. Bd2xb4 c5xb4 Black places his central pawn on black squares (d6 and e5). If White moves d4 – d5, Black gets a square for one of his knights thanks to the advanced pawn on b4 on c5. This Nc5 presses against e4 from there and controls the queenside, on which Black then gains a space advantage. In this constellation thus achieved, White tries to use a2-a3 to combat the space advantage and open the a-file for his rook.
Covering the attacked bishop b4 with 4.… Qd8 – e7 is more flexible.
- 4. Nb1-d2
The exchange of the b4-bishop after 5. a2 – a3 Bb4xNd2 + gets the white bishop thanks to 4. Nb1 – d2. The positive point for Black on 5. a2 – a3 Bb4xNd2 + is control over e4. Alternatively, Black withdraws his bishop after 4.… d7 – d5 5. a2 – a3 because a kind of queen's gambit arises in which the queen's knight is slightly worse on d2 than on his "natural" square c3.
- 4. Sb1-c3
Then the game goes over to the Nimzowitsch-Indian Defense by changing trains .
literature
- Egon Varnusz: How do you play Bogo-Indian? Dreier, Mannheim 1989.