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.
1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4
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♞ You have reached French Defense: Tarrasch Variation, Pawn Center Variation C05 — the catalogued line ends exactly here.
Book continuations win% from 1.5M rated games
No catalogued line continues from here — the book ends at this position. Undo a move or start a different order.
Matching openings 1
Only the line above reaches this exact move order.
3810 catalogued lines in total · openings encyclopedia