Contact
Send a note about a bug, a technique page, or something the game did that does not match the rules. I read what comes in. I do not promise a reply the same day.
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A few things people ask
Where is my puzzle saved?
On this device, in the browser's local storage. The same browser can resume it. A different device cannot. There is no account.
Can I print a puzzle?
No. The puzzles are for playing on the site.
Where do the puzzles come from?
They are generated in your browser when you start a game. There is no database of stored puzzles. The daily puzzle is the same Not Easy grid for everyone on a given UTC date, because it is seeded from that date.
Is there an app?
There is no separate app in an app store. On a phone you can add the site to your home screen from the browser. The game, including a new puzzle and the daily, works offline after it has loaded once.
Where are the techniques?
The technique library walks through each step the solver uses. The articles cover how to play, common mistakes, and a measurement of New York Times Medium and Hard.