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 g6 2. e4 Bg7 3. Nc3 c5 4. Nf3 ◀ Undo move

Book continuations win% from 1.5M rated games

Qa5 6

Matching openings 6

Modern Defense: Pterodactyl Variation B27 1 ply deeper
Pterodactyl Defense: Sicilian, Siroccopteryx B06 2 plies deeper
Pterodactyl Defense: Sicilian, Anhanguera B27 2 plies deeper
Pterodactyl Defense: Sicilian, Benoni Gambit B27 2 plies deeper
Pterodactyl Defense: Sicilian, Unpin B27 2 plies deeper
Pterodactyl Defense: Sicilian, Quetzalcoatlus B06 3 plies deeper

3810 catalogued lines in total · openings encyclopedia