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. d4 Nf6 2. c4 e6 3. Nc3
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Matching openings 114
- Nimzo-Indian Defense E20 1 ply deeper
- Queen's Gambit Declined: Exchange Variation D35 2 plies deeper
- Nimzo-Indian Defense: Dilworth Gambit E20 2 plies deeper
- Nimzo-Indian Defense: Kmoch Variation E20 2 plies deeper
- Nimzo-Indian Defense: Mikenas Attack E20 2 plies deeper
- Nimzo-Indian Defense: Romanishin Variation E20 2 plies deeper
- Nimzo-Indian Defense: Three Knights Variation E21 2 plies deeper
- Nimzo-Indian Defense: Spielmann Variation E22 2 plies deeper
- Nimzo-Indian Defense: Sämisch Variation E24 2 plies deeper
- Nimzo-Indian Defense: Leningrad Variation E30 2 plies deeper
- Nimzo-Indian Defense: Classical Variation E32 2 plies deeper
- Nimzo-Indian Defense: Rubinstein System E40 2 plies deeper
…and 102 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia