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. Move orders, not transpositions — exactly the paths over the board. Prefer the family trees? Every opening page has one.
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6
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Matching openings 117
- Ruy Lopez: Morphy Defense, Anderssen Variation C77 1 ply deeper
- Ruy Lopez: Morphy Defense, Bayreuth Variation C77 1 ply deeper
- Ruy Lopez: Morphy Defense, Jaffe Gambit C77 1 ply deeper
- Ruy Lopez: Morphy Defense, Mackenzie Variation C77 1 ply deeper
- Ruy Lopez: Morphy Defense, Tarrasch Variation C77 1 ply deeper
- Ruy Lopez: Morphy Defense, Wormald Attack C77 1 ply deeper
- Ruy Lopez: Morphy Defense C78 1 ply deeper
- Ruy Lopez: Brix Variation C78 2 plies deeper
- Ruy Lopez: Central Countergambit C78 2 plies deeper
- Ruy Lopez: Morphy Defense, Møller Variation C78 2 plies deeper
- Ruy Lopez: Morphy Defense, Steinitz Deferred C79 2 plies deeper
- Ruy Lopez: Open C80 2 plies deeper
…and 105 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia