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. Nf3 c5 2. e3 g6 3. d4 Bg7
◀ Undo move
Matching openings 3
- Colle System: Rhamphorhynchus Variation A04 2 plies deeper
- Colle System: Pterodactyl Variation A40 2 plies deeper
- Colle System: Siroccopteryx Variation A40 4 plies deeper
3810 catalogued lines in total · openings encyclopedia