Queen's Gambit Declined: Baltic Defense, Queen Attack Deferred

1.d4 d5 2.c4 Bf5 3.Nc3 e6 4.Qb3

ECO D06

The Queen's Gambit Declined: Baltic Defense, Queen Attack Deferred is a chess opening line in the Queen's Gambit Declined complex, reached after 1.d4 d5 2.c4 Bf5 3.Nc3 e6 4.Qb3.

It is catalogued under code D06 in the Encyclopaedia of Chess Openings (ECO).

The defining move Qb3 is chosen by White on move 4.

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