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. c4 e6 2. d4 b6 3. Nc3 Bb7 4. e4 f5
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Matching openings 2
- English Defense: Hartlaub Gambit Declined A40 1 ply deeper
- English Defense: Hartlaub Gambit Accepted A40 2 plies deeper
3810 catalogued lines in total · openings encyclopedia