Privacy

What we know about you. Very little.

Effective November 10, 2026

The short version

No accounts, no ads, no cookies, nothing sold. Your progress stays on your device. We count anonymous play times and bugs so the puzzles stay fair and working, and you can switch that off.

On your device

Your streaks, results, settings and a copy of the boards released so far are saved in your browser’s local storage. They never leave your device unless you copy a progress code yourself. Clearing this site’s data in your browser deletes them.

What the games send us

When you start or solve a board, the game sends a short note: which game, the board number, daily or practice, hard mode or not, and for a solve your time, your score (moves or Duhs) and how many undos or guesses you used. If the page hits a bug, it sends the error message, the game and board, and the browser family (for example “Safari, mobile”).

These notes carry no name, account, cookie, device id or IP address, and we can’t link them to each other or to you. We use them only to see how hard each board really is and to fix bugs.

Visit counts

We use Cloudflare Web Analytics to count page visits: the page, the site you came from, your country, browser and device type, and how fast the page loaded. It sets no cookies and keeps nothing on your device. Cloudflare runs it under its own privacy policy.

Hosting

The site runs on Cloudflare. Like any web host, Cloudflare handles your IP address to deliver pages and block abuse. We don’t store IP addresses in our own database.

Switching it off

If your browser sends Global Privacy Control or Do Not Track, the games send us nothing: no play notes and no bug reports. Content blockers that block Cloudflare’s analytics script stop the visit counts. The games work exactly the same either way.

What we don’t do

No advertising, no tracking across other sites, no selling or sharing of data, no profiles. The site isn’t aimed at children and doesn’t knowingly collect anything from them; it doesn’t collect personal information from anyone.

Changes and contact

If this changes, we’ll update this page and its date. Questions, bugs or a puzzle that seems wrong: [email protected].