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.

⚖ Strict move orders

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 ◀ Undo move

Book continuations win% from 1.5M rated games

O-O 4 d5 2

Matching openings 6

Grünfeld Defense: Counterthrust Variation E60 1 ply deeper
Neo-Grünfeld Defense: Exchange Variation D71 3 plies deeper
King's Indian Defense: Fianchetto Variation, Carlsbad Variation E62 5 plies deeper
King's Indian Defense: Fianchetto Variation, Yugoslav Variation, Rare Line E64 5 plies deeper
King's Indian Defense: Fianchetto Variation, Debrecen Defense E67 5 plies deeper
King's Indian Defense: Fianchetto Variation, Lesser Simagin (Spassky) E62 7 plies deeper

3810 catalogued lines in total · openings encyclopedia