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.
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3
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♞ You have reached Nimzo-Indian Defense: Three Knights Variation E21 — the catalogued line ends exactly here.
Book continuations win% from 1.5M rated games
Matching openings 8
- Nimzo-Indian Defense: Three Knights Variation, Korchnoi Variation E21 2 plies deeper
- Nimzo-Indian Defense: Three Knights Variation, Euwe Variation E21 3 plies deeper
- Nimzo-Indian Defense: Romanishin Variation E20 4 plies deeper
- Nimzo-Indian Defense: St. Petersburg Variation E43 4 plies deeper
- Nimzo-Indian Defense: St. Petersburg Variation E43 8 plies deeper
- Nimzo-Indian Defense: Romanishin Variation, English Hybrid E20 9 plies deeper
- Nimzo-Indian Defense: St. Petersburg Variation E43 10 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia