Daily Sudoku
How Daily Sudoku works
Every day there’s one new Sudoku, the same board for everyone. Solve it, then send your result to a friend: they get the same puzzle with your score to beat.
- Fill every row, column and 3×3 box with the digits 1 to 9, each one once.
- Tap a square, then a number. A wrong number shakes and disappears, and counts as a mistake.
- Use Notes to pencil in possibilities, and 💡 Hint if you’re stuck.
The week gets harder
Monday is easy. Tuesday and Wednesday are medium. Thursday, Friday and Sunday are hard, and Saturday is expert. Every puzzle has exactly one answer and never needs a guess.
Your score
Your score is your time, plus 20 seconds for every mistake and 60 seconds for every hint. Lowest score wins, so slow and careful can beat fast and sloppy. Your progress saves as you go, and your streak grows every day you solve it.
Want more than one a day? Play free Sudoku at any level, or solve one together on two phones with Sudoku TagTeam.
Beyond the numbers
Sudoku isn't really a math game. You could swap the digits for nine fruits or colors and the rules wouldn't change. It's pure logic: every number can be worked out without guessing.
Strategies, from easy to expert
- Scanning: pick a digit and look at where it already sits. Often there's only one square left for it in a box. That's all Easy and Medium puzzles need.
- Pairs: if two squares in a row can only be 3 or 8, no other square in that row can be 3 or 8. Hard puzzles need this.
- X-wing: when a digit can only go in the same two columns in two different rows, it's ruled out of those columns everywhere else. Expert puzzles need patterns like this.
FAQ
Do we need accounts or an app?
No. The whole game travels inside the link, and each phone remembers its latest board.
What if I open an old link by mistake?
Your phone keeps the newest version of each game, so an older link just shows your latest board.
Can I play alone?
Yes. Choose Just me when you start a puzzle. You can turn on a 3-mistake limit for an extra challenge.
How are the difficulty levels different?
Easy and Medium can be solved by scanning alone (Easy gives you more numbers to start). Hard needs pairs. Expert needs advanced patterns like the X-wing. Every puzzle has exactly one answer.