117. Orthodox Defence in Queen’s Gambit Declined

Orthodox Defence Sub Group (D01.055.QD – D01.105.QD), arises after 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 0-0 6.Nf3. After completing harmonious development with Nf3, White establishes a flexible and classical framework that supports multiple strategic plans, including Bd3, Qc2, Rc1, and central pawn breaks.

This opening emphasizes control, coordination, and long-term pressure rather than immediate confrontation. White keeps central tension intact while Black prepares to choose between Tartakower, Lasker, Classical, or Semi-Tarrasch structures. The resulting positions are rich in strategic ideas, manoeuvring play, and structural subtleties.

The Orthodox Attack suits players who value clarity, positional understanding and the ability to adapt plans based on Black’s setup within a sound Queen’s Gambit framework.

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