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. Move orders, not transpositions — exactly the paths over the board. Prefer the family trees? Every opening page has one.

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 ◀ Undo move

Book continuations

Matching openings 4

Pterodactyl Defense: Western, Rhamphorhynchus B27 1 ply deeper
Pterodactyl Defense: Sicilian, Rhamphorhynchus B27 2 plies deeper
Pterodactyl Defense: Sicilian, Pteranodon B27 4 plies deeper
Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation B27 5 plies deeper

3810 catalogued lines in total · openings encyclopedia