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
◀ Undo move
Matching openings 141
- Ruy Lopez: Bird's Defense Deferred C70 1 ply deeper
- Ruy Lopez: Morphy Defense, Alapin's Defense Deferred C70 1 ply deeper
- Ruy Lopez: Morphy Defense, Caro Variation C70 1 ply deeper
- Ruy Lopez: Morphy Defense, Classical Defense Deferred C70 1 ply deeper
- Ruy Lopez: Morphy Defense, Cozio Defense C70 1 ply deeper
- Ruy Lopez: Morphy Defense, Fianchetto Defense Deferred C70 1 ply deeper
- Ruy Lopez: Morphy Defense, Schliemann Defense Deferred C70 1 ply deeper
- Ruy Lopez: Morphy Defense, Modern Steinitz Defense C71 1 ply deeper
- Ruy Lopez: Morphy Defense, Schliemann Defense Deferred, Jaenisch Gambit Deferred C70 2 plies deeper
- Ruy Lopez: Morphy Defense, Modern Steinitz Defense C71 2 plies deeper
- Ruy Lopez: Morphy Defense, Modern Steinitz Defense C71 2 plies deeper
- Ruy Lopez: Morphy Defense, Modern Steinitz Defense C72 2 plies deeper
…and 129 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia