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. Nc3 e5 2. f4
◀ Undo move
♞ You have reached Bird Opening: From's Gambit, Bahr Gambit A02 — the catalogued line ends exactly here.
Book continuations win% from 1.5M rated games
Matching openings 2
- Van Geet Opening: Nowokunski Gambit A00 2 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia