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 g6 2. d4 Bg7 3. Nc3 d6
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♞ You have reached Modern Defense: Standard Defense B06 — the catalogued line ends exactly here.
Book continuations win% from 1.5M rated games
Matching openings 4
- Modern Defense: Pseudo-Austrian Attack B06 1 ply deeper
- Modern Defense: Two Knights Variation B06 1 ply deeper
- Modern Defense: Two Knights Variation, Suttles Variation, Tal Gambit B06 6 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia