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. c4 Nf6 2. d4 e6 3. Nf3 Bb4 4. Nbd2 ◀ Undo move

♞ You have reached Bogo-Indian Defense: Grünfeld Variation E11 — the catalogued line ends exactly here.

Book continuations win% from 1.5M rated games

b6 2

Matching openings 3

Queen's Indian Defense, with e3, Bb4+ Line E14 3 plies deeper
Queen's Indian Defense, with e3 E14 6 plies deeper

…and 1 more lines run through this position — keep making moves to narrow it down.

3810 catalogued lines in total · openings encyclopedia