Free "Sudoku of the day" widget for your website

Give your readers a fresh Sudoku every day. Paste one snippet, and the widget keeps itself up to date — a new medium puzzle appears automatically at midnight UTC. No JavaScript of your own, no maintenance, free forever.

The snippet

Copy this anywhere HTML is allowed (blog post, sidebar, CMS block):

<iframe src="https://sudokustreak.com/widget/daily"
        width="320" height="440" style="border:1px solid #e5e7eb;border-radius:12px"
        title="Sudoku of the day" loading="lazy"></iframe>

Live preview

Good to know

• The preview shows today's medium daily challenge — the same puzzle everyone plays on SudokuStreak that day.
• Clicking it opens the playable puzzle on sudokustreak.com in a new tab; your page stays open.
• The widget is ~15 kB, loads lazily, sets no cookies and runs no analytics on your site.
• You may use it on any website, free, as long as the widget's own links stay intact.