Library/Openings/Queen's Indian Defense/Classical Variation ECO E17
Opening· 11 plies

Queen's Indian Defense: Classical Variation

An entry in the Encyclopedia of Chess Openings (ECO E17), reached after 11 half-moves: 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O.

Queen's Indian Defense: Classical Variation ECO E17
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Black rook
Black knight
Black queen
Black king
Black rook
Black pawn
Black bishop
Black pawn
Black pawn
Black bishop
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black knight
White pawn
White pawn
White knight
White pawn
White pawn
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White bishop
White pawn
White rook
White knight
White bishop
White queen
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White king
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About this opening

Queen's Indian Defense: Classical Variation is an opening in the Encyclopedia of Chess Openings, classified under code E17. ECO group E (E00–E99) covers Indian defences against 1.d4, covering the Nimzo-Indian, Queen's Indian, King's Indian and Catalan systems. This particular variation is reached after 11 half-moves from the starting position, with the move sequence 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O.

It belongs to the Queen's Indian Defense family. Within that family this is a sub-variation (the Classical Variation line).

The opening sequence in prose form: 1.d4 Nf6, 2.c4 e6, 3.Nf3 b6, 4.g3 Bb7, 5.Bg2 Be7, 6.O-O. From this position exactly one named continuation is recorded in the encyclopaedia.