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. Bb5 Nf6 4. O-O d6
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♞ You have reached Ruy Lopez: Berlin Defense, Improved Steinitz Defense C66 — the catalogued line ends exactly here.
Book continuations win% from 1.5M rated games
Matching openings 6
- Ruy Lopez: Closed Berlin Defense, Chigorin Variation C66 2 plies deeper
- Ruy Lopez: Berlin Defense, Closed Wolf Variation C66 4 plies deeper
- Ruy Lopez: Berlin Defense, Hedgehog Variation C66 4 plies deeper
- Ruy Lopez: Berlin Defense, Closed Bernstein Variation C66 5 plies deeper
- Ruy Lopez: Berlin Defense, Closed Showalter Variation C66 5 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia