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. Bg5
◀ Undo move
♞ You have reached Nimzo-Indian Defense: Leningrad Variation E30 — the catalogued line ends exactly here.
Book continuations win% from 1.5M rated games
Matching openings 3
- Nimzo-Indian Defense: Leningrad Variation, Averbakh Gambit E30 5 plies deeper
- Nimzo-Indian Defense: Leningrad Variation, Benoni Defense E31 5 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia