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. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4
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♞ You have reached Indian Defense: Budapest Gambit Accepted, Main Line, Alekhine Variation A52 — the catalogued line ends exactly here.
Matching openings 3
- Indian Defense: Budapest Gambit Accepted, Main Line, Alekhine Variation, Abonyi Variation A52 1 ply deeper
- Indian Defense: Budapest Gambit Accepted, Main Line, Alekhine Variation, Tartakower Defense A52 1 ply deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia