When does the daily Sudoku change?
It changes at midnight in your local IANA time zone, with UTC as a safe fallback.
One puzzle each day
The same challenge, wherever you begin.
The daily Sudoku is fixed by your local calendar date and selected from a pre-validated static manifest.
Finish either daily game to maintain your streak. Replaying the same date never adds a second streak day.
Common questions
Can I play older daily puzzles?
Yes. Published dates remain available in the daily archive.