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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5
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♞ You have reached Ruy Lopez: Morphy Defense, Caro Variation C70 — the catalogued line ends exactly here.
Book continuations win% from 1.5M rated games
Matching openings 5
- Ruy Lopez: Morphy Defense, Graz Variation C70 2 plies deeper
- Ruy Lopez: Morphy Defense, Norwegian Variation C70 2 plies deeper
- Ruy Lopez: Morphy Defense, Norwegian Variation, Nightingale Gambit C70 3 plies deeper
- Ruy Lopez: Noah's Ark Trap C71 8 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia