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| Moves | 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ | ||||||||||||||||||||||||||||||||||||||||||||
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| ECO | E11 | ||||||||||||||||||||||||||||||||||||||||||||
| Named after | Efim Bogoljubow | ||||||||||||||||||||||||||||||||||||||||||||
| Parent | Indian Defence | ||||||||||||||||||||||||||||||||||||||||||||
TheBogo-Indian Defence is achess opening characterised by the moves:
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 theNimzo-Indian Defence (which would follow after 3.Nc3 Bb4). After 3.Nf3, Black usually plays 3...b6 (theQueen's Indian Defence) or 3...d5 (transposing to theQueen'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+, theKeres Defence.
The Bogo-Indian is classified as E11 by theEncyclopaedia of Chess Openings (ECO). The name comes from an abbreviation of 20th century grandmasterEfim Bogoljubow's name.
The Bogo-Indian Defence is named after the Russian-born German masterEfim Bogoljubow who is believed to have originated the opening and played it regularly in the 1920s. Subsequent prominent players to have adopted the Bogo-Indian includeAron Nimzowitsch,Paul Keres,Tigran Petrosian,Bent Larsen,Vasily Smyslov,Viktor Korchnoi,Ulf Andersson,Michael Adams andNikita Vitiugov.
White has three viable moves to meet thecheck. 4.Nc3 is atransposition to theKasparov Variation of the Nimzo-Indian; therefore, the main independent variations are 4.Bd2 and 4.Nbd2.
4.Bd2 is the most common line; the bishop on b4 is now threatened and Black must decide how to meet this threat.
| a | b | c | d | e | f | g | h | |||
|---|---|---|---|---|---|---|---|---|---|---|
| 8 |  |  |  | |  |  |  | | 8 | |
| 7 |  |  | | |  | | | | 7 | |
| 6 | | | | |  | | | | 6 | |
| 5 | | | | | | | | | 5 | |
| 4 | | |  | | | | | | 4 | |
| 3 | | |  | | |  |  | | 3 | |
| 2 | | | | | | |  | | 2 | |
| 1 | | |  |  |  | | |  | 1 | |
| a | b | c | d | e | f | g | h |
4.Nbd2 is an alternative aiming to acquire thebishop for theknight or forcing Black's bishop to retreat. The downside is that the knight is developed to a square where it blocks the bishop, and d2 is a less active square than c3. The line is described in theGambit Guide as "ambitious". Black's most common replies are 4...b6, 4...0-0, and 4...d5.
This opening can sometimes give rise to theMonticelli Trap.
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