Tree path 4 levels Queen's Gambit Declined: Three Knights Variation › Queen's Gambit Declined: Modern Variation, Normal Line › Queen's Gambit Declined: Orthodox Defense › Main Line
Queen's Gambit Declined: Orthodox Defense, Main Line
Overview
Queen's Gambit Declined: Orthodox Defense, Main Line belongs to the gambit family of chess openings (ECO D63, 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.
It is reached after 13 plies of play, with the move sequence 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1.
The line refines Queen's Gambit Declined: Orthodox Defense, which traces back to the root opening Queen's Gambit Declined: Three Knights Variation.
The line splits into 2 documented sub-systems: Queen's Gambit Declined: Orthodox Defense, Henneberger Variation, Queen's Gambit Declined: Orthodox Defense, Main Line.
In total, the branch covers 6 sub-variations across all depths.
Explore the position on the interactive board, study its real-world results from Lichess, and challenge the engine when you are ready.
- ECO code
- D63
- Group
- Closed & Semi-Closed Games (D)
- Plies
- 13
- Direct variations
- 2
- 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.
Statistics from Lichess
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Source: Lichess Opening Explorer · cached
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Variations (2)
Show all 6 sub-variations (full subtree)
- D63 Queen's Gambit Declined: Orthodox Defense, Henneberger Variation 14-ply
- D63 Queen's Gambit Declined: Orthodox Defense, Main Line 14-ply
- D68 Queen's Gambit Declined: Orthodox Defense, Classical Variation 25-ply
- D64 Queen's Gambit Declined: Orthodox Defense, Rubinstein Attack 15-ply
- D63 Queen's Gambit Declined: Orthodox Defense, Swiss, Carlsbad Variation 15-ply
- D64 Queen's Gambit Declined: Orthodox Defense, Rubinstein Attack 16-ply