Tree path 2 levels Queen's Gambit Declined: Three Knights Variation › Queen's Gambit Declined: Neo-Orthodox Variation, Main Line
- Caissa Codex
- Queen's Gambit Declined: Three Knights Variation D37
- Queen's Gambit Declined: Neo-Orthodox Variation, Main Line D55 you are here
Queen's Gambit Declined: Neo-Orthodox Variation, Main Line
Overview
Queen's Gambit Declined: Neo-Orthodox Variation, Main Line is a sacrificial opening line filed under ECO D55 in the Closed & Semi-Closed Games group. The defining idea is the early concession of material to seize the initiative and unbalance the position.
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 13 plies — specifically the moves 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3.
It branches immediately from Queen's Gambit Declined: Three Knights Variation in the opening tree.
2 named variations grow from this line, including Queen's Gambit Declined: Lasker Defense, Teichmann Variation, Queen's Gambit Declined: Tartakower Defense.
Use the board to walk through every move, check how the position has scored on Lichess, or take it head-to-head against Stockfish.
- ECO code
- D55
- Group
- Closed & Semi-Closed Games (D)
- Plies
- 13
- Direct variations
- 2
This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.
Statistics from Lichess
1,070,915 games · White 48.2% / Draw 7.2% / Black 44.6%
| Moves | Games | W / D / B |
|---|---|---|
| b6 | 348,125 | |
| Nbd7 | 166,303 | |
| Ne4 | 134,599 | |
| c6 | 118,375 | |
| c5 | 112,057 | |
| a6 | 69,838 | |
| Nc6 | 37,167 | |
| dxc4 | 34,430 |
Source: Lichess Opening Explorer · cached 2026-09-26 02:52:20
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Submissions are reviewed before publishing.