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. c3
◀ Undo move
♞ You have reached King's Pawn Game: MacLeod Attack C20 — the catalogued line ends exactly here.
Matching openings 3
- King's Pawn Game: MacLeod Attack, Lasa Gambit C20 1 ply deeper
- King's Pawn Game: MacLeod Attack, Norwalde Gambit C20 3 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia