Sudoku challenges
Pick a date on the calendar, then play that day’s puzzles — Easy, Medium, Hard, and Expert — just like a daily archive.
The calendar highlights the last 90 days through Sep 11, 2026. Any past date still opens if you use a direct link (for example /challenges?date=… or /play/challenge/… from social). Future dates are not available yet.
MonTueWedThuFriSatSun
Play this day
Friday
September 11, 2026
Each date has four fixed puzzles (one per level). Select a level to start — timer, notes, hints, and undo work the same as in quick play.