Daily Sudoku archive and difficulty
The calendar is the archive for this site’s own daily puzzles, beginning on 16 October 2026. It does not contain earlier dates or another publisher’s puzzles. Hard daily Sudoku is scheduled for Thursday and Saturday; the expert challenge is on Sunday. For a hard puzzle on another day, choose hard Sudoku online or expert Sudoku.
Your daily routine
A new puzzle becomes available at 00:00 UTC. Your unfinished game stays on this device, so you can return when you have time.
Choose a date
The calendar opens completed and past puzzles. Future dates are unavailable. Completion is saved locally, without a public leaderboard.
How the daily level is chosen
Monday is easy, Tuesday, Wednesday and Friday are medium, Thursday and Saturday are hard, and Sunday is expert. Every visitor gets the same puzzle for the same date, graded with the same solver as the difficulty levels.
A fresh start tomorrow
When the date changes while you are playing, your current puzzle stays where it is. Choose the new date in the calendar when you are ready to start it. To solve today's puzzle on paper, choose Selected daily puzzle on the printable Sudoku page.
A few helpful answers
A new puzzle starts at 00:00 UTC. An unfinished daily puzzle stays saved on this device, so you can pick the date again and finish it.
No. The level follows the day of the week: easy on Monday, hard on Thursday and Saturday, expert on Sunday and medium on the other days. The panel above the grid shows today's level.
Yes. The game works in your browser. Progress is saved on this device when local storage is available.
Turn Notes on, select an empty cell, then choose numbers to add or remove pencil marks. Turn Notes off to enter a final number.