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 e5 2. f4 exf4 3. Nf3 d5 ◀ Undo move

♞ You have reached King's Gambit Accepted: Modern Defense C36 — the catalogued line ends exactly here.

Book continuations

exd5 3

Matching openings 4

King's Gambit Accepted: Modern Defense C36 1 ply deeper
King's Gambit Accepted: Abbazia Defense C36 2 plies deeper
King's Gambit Accepted: Abbazia Defense, Main Line C36 8 plies deeper

…and 1 more lines run through this position — keep making moves to narrow it down.

3810 catalogued lines in total · openings encyclopedia