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. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3
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Matching openings 2
- Sicilian Defense: Nimzowitsch Variation, Exchange Variation B29 1 ply deeper
- Sicilian Defense: Nimzowitsch Variation, Main Line B29 5 plies deeper
3810 catalogued lines in total · openings encyclopedia