Opening explorer
Walk any move order through the catalog: pick a book continuation and watch the board, or open the matching ECO lines on the side. Move orders, not transpositions — exactly the paths over the board. Prefer the family trees? Every opening page has one.
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3
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♞ You have reached Queen's Gambit Declined: Three Knights Variation D37 — the catalogued line ends exactly here.
Matching openings 48
- Queen's Gambit Declined: Barmen Variation D37 1 ply deeper
- Queen's Gambit Declined: Three Knights, Vienna Variation D37 1 ply deeper
- Queen's Gambit Declined: Ragozin Defense D38 1 ply deeper
- Queen's Gambit Declined: Semi-Tarrasch Defense D40 1 ply deeper
- Queen's Gambit Declined: Harrwitz Attack D37 2 plies deeper
- Queen's Gambit Declined: Vienna Variation, Quiet Variation D37 2 plies deeper
- Queen's Gambit Declined: Ragozin Defense, Alekhine Variation D38 2 plies deeper
- Queen's Gambit Declined: Semi-Tarrasch Defense D41 2 plies deeper
- Queen's Gambit Declined: Ragozin Defense, Vienna Variation D39 3 plies deeper
- Queen's Gambit Declined: Exchange Variation, Sämisch Variation D35 4 plies deeper
- Queen's Gambit Declined: Miles Variation D37 4 plies deeper
- Queen's Gambit Declined: Semi-Tarrasch Defense D41 4 plies deeper
…and 36 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia