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. Move orders, not transpositions — exactly the paths over the board. Prefer the family trees? Every opening page has one.
1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5
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♞ You have reached French Defense: Winawer Variation, Retreat Variation C17 — the catalogued line ends exactly here.
Book continuations
Matching openings 2
- French Defense: Winawer Variation, Retreat Variation, Armenian Line C17 2 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia