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. d4 Nf6 2. c4 Nc6 3. d5
◀ Undo move
Book continuations win% from 1.5M rated games
Matching openings 1
- Mexican Defense: Horsefly Gambit A50 2 plies deeper
3810 catalogued lines in total · openings encyclopedia