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.
⚖ Grouping by position
Grouping by position: lines that reach this position by a different move order are included too.
1. c4 Nf6 2. d4 d6 3. Nc3 e5
◀ Undo move
♞ You have reached Old Indian Defense: Ukrainian Variation A54 — the catalogued line ends exactly here.
Matching openings 3
- Old Indian Defense: Two Knights Variation A54 1 ply deeper
- Old Indian Defense: Duz-Khotimirsky Variation A54 3 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia