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.
1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6
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Book continuations win% from 1.5M rated games
Matching openings 2
- Sicilian Defense: Smith-Morra Gambit Accepted, Sozin Formation B21 6 plies deeper
- Sicilian Defense: Smith-Morra Gambit Accepted, Chicago Defense B21 8 plies deeper
3810 catalogued lines in total · openings encyclopedia