Bogo-Indian Defence

Bogo-Indian Defence
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8
a8 black rook
b8 black knight
c8 black bishop
d8 black queen
e8 black king
h8 black rook
a7 black pawn
b7 black pawn
c7 black pawn
d7 black pawn
f7 black pawn
g7 black pawn
h7 black pawn
e6 black pawn
f6 black knight
b4 black bishop
c4 white pawn
d4 white pawn
f3 white knight
a2 white pawn
b2 white pawn
e2 white pawn
f2 white pawn
g2 white pawn
h2 white pawn
a1 white rook
b1 white knight
c1 white bishop
d1 white queen
e1 white king
f1 white bishop
h1 white rook
8
77
66
55
44
33
22
11
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Moves1.d4 Nf6 2.c4 e6 3. Nf3 Bb4+
ECOE11
Named afterEfim Bogoljubow
ParentIndian Defence

The Bogo-Indian Defence is a chess opening characterised by the moves:

1. d4 Nf6
2. c4 e6
3. Nf3 Bb4+

The position after 1.d4 Nf6 2.c4 e6 is common. The traditional move for White here is 3.Nc3, threatening to set up a big pawn centre with 4.e4. However, 3.Nf3 is often played instead as a way of avoiding the Nimzo-Indian Defence (which would follow after 3.Nc3 Bb4). After 3.Nf3, Black usually plays 3...b6 (the Queen's Indian Defence) or 3...d5 (transposing to the Queen's Gambit Declined), but can instead play 3...Bb4+, the Bogo-Indian Defence. Databases suggest that the Bogo-Indian is played approximately half as often as the Queen's Indian.

The Bogo-Indian Defence can also arise via the move order 1.d4 e6 2.c4 Bb4+, the Keres Defence.

The Bogo-Indian is classified as E11 by the Encyclopaedia of Chess Openings (ECO).