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.

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1. e4 c5 2. Nf3 d6 ◀ Undo move

♞ You have reached Sicilian Defense: Modern Variations B50 — the catalogued line ends exactly here.

Book continuations

Matching openings 122

…and 110 more lines run through this position — keep making moves to narrow it down.

3810 catalogued lines in total · openings encyclopedia