About ChillSudoku

ChillSudoku is a small site built around one simple idea: Sudoku should feel relaxing. No signup wall. No popups blocking the grid. Open the page, pick a difficulty, start solving.

What's Here

One fresh puzzle every day at three difficulty levels (Easy, Medium, Hard). Pencil-mark notes, automatic timer, conflict highlighting. Your in-progress game saves locally so you can pick up where you left off.

How Puzzles Are Generated

Every puzzle is procedurally generated and verified to have exactly one solution. The daily seed is derived from the UTC date, so every player worldwide gets the same puzzle on the same day.

How We Stay Free

Display advertising, kept unobtrusive — no popovers, no autoplay video, no interstitials interrupting the solve. If an ad ever blocks the grid, email hello@chillsudoku.com and we'll fix it.

Other Games by Us

Contact

Email hello@chillsudoku.com for questions, bug reports, or feature requests.

Other Sites by Us

🃏 Solitaire

🎯 Wordle-style daily

🍉 Casual

📚 Puzzle answers

🛠️ Dev tools

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