Bogo-Indian Defence

In the Bogolyubov - Indian Defence ( also briefly: Bogo - Indian) is an opening of the chess game. It is among the Closed Games and is named after Efim Bogolyubov, a Ukrainian- German world class player in the first half of the 20th century. Your ECO code E11.

Each of its variants begin with the trains

1 d2 -d4 Ng8 - f6 2 c2 - c4 e7 - e6 3 Sg1 -f3 Bf8 - b4

The original positional idea of Bogo - Indian is exchange the dark-squared bishop in order to stem with d7 - d6 and e6 - e5 in the center and set the white center pawns on white squares, namely on e4 and d5. A white -span rotor of white would be slightly worse than the white -span of black. It is about the strategic concept " good runner vs. Poor runner".

Another building could b7 b6 Black, Bc8 - b7, Nf6 - e4, f7 - f5 and a kingside attack by a Dutch model with 0-0, Rf8 - f6, be Tf6 - h6.

Main variants

After 3 ... Bf8 - b4 the main variants divide:

  • 4 Lc1 -d2

In addition to the immediate 4 ... Lb4xd2 the attacked runners can be met b4 with 4 ... c7 - c5 or 4 ... a7 - a5, because the re- take on b4 with a pawn for black space on the queenside with it brings.

After 4 ... c7 - c5 ( an idea of the Latvian IM Alvis Vītoliņš ( 1946-1997 ) ) 5 Ld2xb4 c5xb4 presents Black 's center pawns on black squares (d6 and e5). If White d4 -d5 pulls, Schwarz receives thanks to the advanced farmers b4 c5 on a field for one of his jumpers. This Sc5 suppressed from there against e4 and controlled the women's wing, then gets a space advantage on the black. In this constellation thus achieved tries white, by a2 -a3 to fight the space advantage and open the a-file for his rook.

Flexible is the coverage of the targeted runner b4 with 4 ... Qd8 - e7.

  • 4 Nb1 -d2

The exchange of the rotor b4 after 5 a2 -a3 Lb4xSd2 receives the White thanks 4 Nb1 -d2 the bishop pair. The positive point for Black to 5 a2 -a3 Lb4xSd2 is in control of e4. Alternatively draws black to ... d7 -d5 4 5 a2 -a3 his bishop back because a kind Queen's Gambit is formed in which the queen's knight on d2 c3 is slightly worse than its "natural " field.

  • 4 Nb1 - c3

After that, the game goes into the Nimzowitsch -Indian defense by diverter.

Efim Bogoljubov Transposition (chess)
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