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 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 a6
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Book continuations win% from 1.5M rated games
Matching openings 2
- Four Knights Game: Spanish Variation, Ranken Variation C48 1 ply deeper
- Four Knights Game: Spanish Variation, Spielmann Variation C48 12 plies deeper
3810 catalogued lines in total · openings encyclopedia