Queen's Gambit Declined: Orthodox Defense, Bd3 Line

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3

ECO D66

The Queen's Gambit Declined: Orthodox Defense, Bd3 Line is a chess opening line in the Queen's Gambit Declined complex, reached after 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3.

It is catalogued under code D66 in the Encyclopaedia of Chess Openings (ECO).

The defining move Bd3 is chosen by White on move 8.

Study this line with a grandmaster

This position is covered in the Opening Tricks Hall of Fame course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

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