Tic-Tac-Toe
Preserve or create. Decide the fate of the universe with O and X in an absurdly epic 3D game of tic-tac-toe.
PlayRelaxing Sudoku
Play as much as you like, at any difficulty
What kind of Sudoku is this?
A classic puzzle at your own pace
The rules are the same as classic Sudoku: fill each row, column, and outlined block without repeating a number.
Instead of a fixed puzzle collection, you can freely create a puzzle by choosing its grid size and difficulty.
Relaxing Sudoku does not judge entries until you choose to check your answer, so it keeps some of the feel of solving on paper. The timer is optional: there is no need to compete for time or score.
Choose how you play
- Choose a 4×4, 6×6, or 9×9 grid.
- 9×9 has five levels from Easy to Master; 4×4 and 6×6 have two beginner-friendly levels.
- Use notes for candidate numbers, continuous entry for a number, undo and redo, and the optional timer.
Create puzzles as often as you like
Puzzles are created in this browser and checked to ensure that each one has a unique solution. The same Sudoku ID recreates the same puzzle on another device.
Saving and privacy
Your play data is never sent to a server or stored in a database. Saved puzzles, answers in progress, notes, history, and clear counts stay only in this browser’s storage.
Browser data deletion also removes these records, so keep the Sudoku ID or share URL for any puzzle you want to revisit.
PUZZLE SETUP
Simply choose a size, difficulty, and whether to use a timer to create a puzzle.Create a New Puzzle
Open a puzzle with its Sudoku ID
Enter a Sudoku ID to open the same puzzle.
Choose a size and difficulty, then create a puzzle.
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