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. f4 d5 2. e4 ◀ Undo move

♞ You have reached Bird Opening: Williams Gambit A03 — the catalogued line ends exactly here.

Book continuations

dxe4 2

Matching openings 3

Bird Opening: Williams Gambit A03 4 plies deeper
Bird Opening: Williams-Zilbermints Gambit A03 4 plies deeper

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

3810 catalogued lines in total · openings encyclopedia