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 Nf6 2. d4 e6 3. Nf3 Bb4 4. Nc3 b6
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Book continuations win% from 1.5M rated games
Matching openings 3
- Nimzo-Indian Defense: St. Petersburg Variation E43 3 plies deeper
- Queen's Indian Defense: Kasparov Variation E13 4 plies deeper
- Nimzo-Indian Defense: St. Petersburg Variation E43 9 plies deeper
3810 catalogued lines in total · openings encyclopedia