Daily Sudoku
How to Play Daily Sudoku
Fill the 9×9 grid so that every row, every column, and every 3×3 box contains the digits 1 through 9 exactly once. Tap or click a cell, then choose a number from the pad below. Use the keyboard arrow keys to move around.
Tips
- Notes mode lets you jot down small candidate numbers in a cell. Toggle it with the Notes button or press N.
- Hints reveal one correct number if you get stuck — but they count toward your final stats.
- Four difficulties control how many starting numbers you get. Easy has more givens; Expert leaves the most blanks.
A new puzzle resets every day at midnight UTC. The same daily puzzle appears for every player worldwide, so you can compare times without spoilers.
Frequently Asked Questions
Is this free to play?
Yes — completely free, no login or sign-up required.
Does every player get the same puzzle?
Yes. The daily puzzle is generated using today's UTC date as a seed, so every player worldwide sees the same Sudoku on the same day.
Is my progress saved?
Yes — your current grid, notes, timer, and difficulty are saved in your browser's localStorage so you can close the tab and return later.
Can I play more than one puzzle a day?
Yes — after finishing the daily puzzle, press Play Again for unlimited bonus rounds with a fresh seeded board.
Are the puzzles guaranteed to have one solution?
Yes. Every generated board is validated by a solver to ensure it has exactly one valid solution.