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. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 ◀ Undo move

♞ You have reached English Opening: King's English Variation, Four Knights Variation, Quiet Line A28 — the catalogued line ends exactly here.

Book continuations

Bb4 2

Matching openings 3

English Opening: King's English Variation, Four Knights Variation, Quiet Line A28 3 plies deeper
English Opening: King's English Variation, Four Knights Variation, Quiet Line A28 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