Chess Codex
Tree path 8 levels Queen's Pawn Game › Queen's Gambit › Queen's Gambit Declined › Queen's Knight Variation › Queen's Gambit Declined: Normal Defense › Queen's Gambit Declined: Modern Variation › Queen's Gambit Declined › Orthodox Defense, Bd3 Line
  1. Chess Codex
  2. Queen's Pawn Game D00
  3. Queen's Gambit D06
  4. Queen's Gambit Declined D30
  5. Queen's Knight Variation D31
  6. Queen's Gambit Declined: Normal Defense D35
  7. Queen's Gambit Declined: Modern Variation D50
  8. Queen's Gambit Declined D53
  9. Orthodox Defense, Bd3 Line D66 you are here
D66

Queen's Gambit Declined: Orthodox Defense, Bd3 Line

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Overview

Queen's Gambit Declined: Orthodox Defense, Bd3 Line belongs to the gambit family of chess openings (ECO D66, Closed & Semi-Closed Games). It trades material for attacking chances — a classic trade-off that has fascinated players from the Romantic era to modern correspondence chess.

The Closed & Semi-Closed Games group covers closed and semi-closed games — 1.d4 systems characterised by long strategic manoeuvring rather than early tactics.

The line arises from 15 plies — specifically the moves 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3.

The line refines Queen's Gambit Declined, which traces back to the root opening Queen's Pawn Game.

It continues primarily into one named line, Queen's Gambit Declined: Orthodox Defense, Capablanca System.

Together the deeper variations number 6 across the full subtree.

Explore the position on the interactive board, study its real-world results from Lichess, and challenge the engine when you are ready.

ECO code
D66
Group
Closed & Semi-Closed Games (D)
Plies
15
Parent
Queen's Gambit Declined
Direct variations
1
Total in subtree
6

This overview is generated automatically from the opening's metadata. A more detailed, human-written description is on the way — and you can speed it up by suggesting one yourself.

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Variations (1)

Related variations at the same level

Sister lines that share the same parent Queen's Gambit Declined:

Show all 6 sub-variations (full subtree)

https://test.av-webdevs.com/openings/queens-gambit-declined-orthodox-defense-bd3-line