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. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Nf3 c5
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Matching openings 5
- Nimzo-Indian Defense: Three Knights Variation, Korchnoi Variation E21 1 ply deeper
- Nimzo-Indian Defense: Three Knights Variation, Euwe Variation E21 2 plies deeper
- Nimzo-Indian Defense: Three Knights Variation, Shocron Gambit E21 2 plies deeper
- Nimzo-Indian Defense: Romanishin Variation E20 3 plies deeper
- Nimzo-Indian Defense: Romanishin Variation, English Hybrid E20 8 plies deeper
3810 catalogued lines in total · openings encyclopedia