Privacy
Short version: no analytics, no advertising, no cookies, no accounts. Your progress is stored in your own browser.
What is stored on your device
To save puzzles and the logbook, the site writes small records to your browser's local storage: the positions of pieces or tiles, your times and move counts, the days you finished a puzzle, and your sound setting. These records stay on your device. They are not cookies, and they are never sent to us.
You can delete them at any time with the button on the logbook page, or by clearing this site's data in your browser settings.
What is not collected
The site uses no analytics or statistics service, no advertising, no tracking pixels, no social media buttons and no third-party scripts or fonts. Everything the pages need is served from this site.
Technical delivery
Like every website, these pages reach you through a web server and a content delivery network, which technically handle your IP address and browser details to send the pages. We do not use that information to identify or profile visitors.
If you write to [email protected], your address is used for nothing but our reply.