Library/Openings/Queen's Gambit Declined/Chigorin Defense/Main Line ECO D07
Opening· 6 plies

Queen's Gambit Declined: Chigorin Defense, Main Line

An entry in the Encyclopedia of Chess Openings (ECO D07), reached after 6 half-moves: 1. d4 d5 2. c4 Nc6 3. Nf3 Bg4.

Queen's Gambit Declined: Chigorin Defense, Main Line ECO D07
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Black rook
Black queen
Black king
Black bishop
Black knight
Black rook
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black pawn
Black knight
Black pawn
White pawn
White pawn
Black bishop
White knight
White pawn
White pawn
White pawn
White pawn
White pawn
White pawn
White rook
White knight
White bishop
White queen
White king
White bishop
White rook
6/6
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  5. 3.
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About this opening

Queen's Gambit Declined: Chigorin Defense, Main Line is an opening in the Encyclopedia of Chess Openings, classified under code D07. ECO group D (D00–D99) covers closed games and semi-closed games beginning 1.d4 d5, covering the Queen's Gambit, Slav, Grünfeld and related queen-pawn structures. This particular variation is reached after 6 half-moves from the starting position, with the move sequence 1. d4 d5 2. c4 Nc6 3. Nf3 Bg4.

It belongs to the Queen's Gambit Declined family. Within that family this is a level-2 branch (the Chigorin Defense → Main Line line). The immediate parent line is Queen's Gambit Declined: Chigorin Defense, transitioned via 3…Bg4.

The opening sequence in prose form: 1.d4 d5, 2.c4 Nc6, 3.Nf3 Bg4. From this position exactly one named continuation is recorded in the encyclopaedia.