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. b3 d5
◀ Undo move
♞ You have reached Nimzo-Larsen Attack: Classical Variation A01 — the catalogued line ends exactly here.
Book continuations
Matching openings 2
- Nimzo-Larsen Attack: Graz Attack A01 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