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. d4 e6
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♞ You have reached Horwitz Defense A40 — the catalogued line ends exactly here.
Matching openings 11
- English Defense A40 2 plies deeper
- Horwitz Defense: Zilbermints Gambit A40 2 plies deeper
- Kangaroo Defense A40 2 plies deeper
- Rat Defense: Small Center Defense C00 2 plies deeper
- Kangaroo Defense: Keres Defense, Transpositional Variation A40 3 plies deeper
- Queen's Gambit Declined: Alapin Variation D31 4 plies deeper
- English Defense: Perrin Variation A40 6 plies deeper
- English Defense: Poli Gambit A40 8 plies deeper
- Benoni Defense: Franco-Sicilian Hybrid A40 12 plies deeper
- Catalan Opening: Closed, Zagoryansky Variation E08 15 plies deeper
…and 1 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia