Observed arrival · 2026-11-01
Centipawn Lab keeps its chess analysis in the browser
A chess game reviewer and opening trainer with a listed Stockfish engine, move grading, game imports, and a repertoire of 3,865 variations.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Chess players reviewing games or studying openings
- Worth noticing
- The opening trainer lists 150 opening families and 3,865 variations, with prompts to play, reveal, or demo a line.
Field notes
The interface groups game review, free position analysis, and opening drills on one page, with a separate dedicated trainer linked from the navigation. It lists PGN and FEN inputs, archive fetching from Chess.com and Lichess, and selectable engine depth; these are presented as available workflows, though the extract does not verify their operation. The site describes its engine as running locally in a browser worker.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue