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. By default move orders are strict — flip the toggle to group by position and pull in transpositions.
1. d4 d5 2. c4 e6 3. Nf3 c5
◀ Undo move
♞ You have reached Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch D30 — the catalogued line ends exactly here.
Book continuations win% from 1.5M rated games
Matching openings 3
- Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch Bishop Attack D30 3 plies deeper
- Queen's Gambit Declined: Tarrasch Defense, Stoltz Variation D34 14 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia