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 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 ◀ Undo move

♞ You have reached Sicilian Defense: Accelerated Dragon, Modern Variation B34 — the catalogued line ends exactly here.

Book continuations

Bg7 4

Matching openings 5

Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation B35 4 plies deeper
Sicilian Defense: Dragon Variation, Modern Bc4 Variation B35 5 plies deeper
Sicilian Defense: Dragon Variation, Classical Variation, Alekhine Line B74 9 plies deeper
Sicilian Defense: Dragon Variation, Classical Variation, Spielmann Variation B74 14 plies deeper

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

3810 catalogued lines in total · openings encyclopedia