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. By default move orders are strict — flip the toggle to group by position and pull in transpositions.

⚖ Grouping by position Grouping by position: lines that reach this position by a different move order are included too.

1. e4 e6 2. d4 d5 ◀ Undo move

♞ You have reached French Defense C00 — the catalogued line ends exactly here.

Book continuations win% from 1.5M rated games

Nc3 117 53% · 5k Nd2 25 52% · 2k e5 22 49% · 10k exd5 5 51% · 9k Nf3 2 35% · 224 c4 2 Bd3 1 51% · 677 Be3 1 Nh3 1 Qe2 1

Matching openings 178

French Defense: Alapin Gambit C00 1 ply deeper
French Defense: Diemer-Duhm Gambit C00 1 ply deeper
French Defense: Morphy Gambit C00 1 ply deeper
French Defense: Perseus Gambit C00 1 ply deeper
French Defense: Schlechter Variation C00 1 ply deeper
French Defense: Exchange Variation C01 1 ply deeper
French Defense: Advance Variation C02 1 ply deeper
French Defense: Tarrasch Variation C03 1 ply deeper
French Defense: Paulsen Variation C10 1 ply deeper
French Defense: Diemer-Duhm Gambit Accepted C00 2 plies deeper
French Defense: Advance Variation C02 2 plies deeper
French Defense: Advance Variation, Extended Bishop Swap C02 2 plies deeper

…and 166 more lines run through this position — keep making moves to narrow it down.

3810 catalogued lines in total · openings encyclopedia