Take your time with Zen mode
Replace the timer with ∞ and solve at your own pace. Choose Zen mode before starting or switch anytime during a game.
Read update →Changelog
New features, improvements, and fixes from Sudoku.so.
Play Sudoku offline, for free
Load the game once online, then come back and play free, ad-free Sudoku without an internet connection.
Read update →Clearer words throughout the game
English interface text is now more consistent across the game, navigation, and supporting pages, with clearer labels and prompts.
Read update →A smoother, more personal experience
Navigation now works better across screen sizes, leaving a game is quicker, and the site follows your device's appearance.
Read update →Your games, right where you left them
Accounts now keep track of your active and completed games, with easier ways to return and improved account recovery.
Read update →Replay every move
Signed-in players can now undo and redo their current moves, then revisit every step after finishing a game.
Read update →