Queen's Gambit Declined: Orthodox Defense (D63)
D63 · Chess Openings Reference GuideTarget Position
Engine Eval:
-0.09
Master Game Statistics
Based on master-level chess games in the database.
White Wins: 42.9%
Draws: 29.4%
Black Wins: 27.7%
Strategic Overview
The Queen's Gambit Declined: Orthodox Defense (ECO code D63) is a key chess opening. From the starting board position, it is defined by the following move sequence:
Move Sequence (SAN)
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 O-O 6. e3 Nbd7
UCI Move Path
d2d4 d7d5 c2c4 e7e6 b1c3 g8f6 c1g5 f8e7 g1f3 e8g8 e2e3 b8d7
Repertoire Training
Import this opening directly into your client-side repertoires to drill or review using spaced repetition.
Internal Navigation
Parent Opening
This line is a variation of the main parent opening:
Queen's Gambit Declined: Bg5 Be7 (D53)Sub-variations & Next Lines
Select a variation to view specific move paths, engine evaluations, and stats:
D20
Queen's Gambit Accepted
D20
Queen's Gambit Accepted: Central Variation
D27
Queen's Gambit Accepted: Classical Variation
D23
Queen's Gambit Accepted: Mannheim Variation
D30
Queen's Gambit Declined
D31
Queen's Gambit Declined: Alatortsev Variation
D08
Queen's Gambit Declined: Albin Countergambit
D06
Queen's Gambit Declined: Austrian Defense
D06
Queen's Gambit Declined: Baltic Defense
D53
Queen's Gambit Declined: Bg5 Be7
D52
Queen's Gambit Declined: Cambridge Springs Defense
D07
Queen's Gambit Declined: Chigorin Defense
D35
Queen's Gambit Declined: Exchange Variation
D56
Queen's Gambit Declined: Lasker Defense
D06
Queen's Gambit Declined: Marshall Defense
D51
Queen's Gambit Declined: Modern Variation
D38
Queen's Gambit Declined: Ragozin Defense
D31
Queen's Gambit Declined: Semi-Slav, Marshall Gambit
D41
Queen's Gambit Declined: Semi-Tarrasch Defense
D58
Queen's Gambit Declined: Tartakower Defense
D37
Queen's Gambit Declined: Three Knights Variation
D39
Queen's Gambit Declined: Vienna Variation