Sudoku
Progress stays on this browser. Daily puzzles change at 00:00 UTC.
Play a fresh easy Sudoku every day. Fill the nine-by-nine grid, check your entries, and return to your saved progress in the same browser.
How to play Sudoku
- Select an empty cell in the grid.
- Place a digit from 1 to 9 using the number buttons or your keyboard.
- Keep each digit unique within its row, column, and 3 × 3 box.
- Use Notes for pencil marks, Erase to clear a cell, or Check to find mistakes.
- Complete all 81 cells correctly to finish the puzzle.
Controls: Click or tap a cell, then choose a number. Keyboard: 1–9, N for Notes, Backspace or Delete to erase.
Build a small daily habit with an easy nine-by-nine Sudoku. Everyone receives the same puzzle for a given UTC date, with fresh clues at midnight UTC. Each generated board has a unique solution and can be completed using simple single-candidate deductions. Rows, columns, and three-by-three boxes must each contain the digits one through nine. Select a cell, enter a number, and use Check when you want feedback. Your entries are saved on this browser when storage is available. Before completion, Reset clears your attempt after confirmation. Complete the board to copy a result that celebrates your solve without revealing any numbers.
A few useful tips
- Start with the row or box that has the fewest gaps.
- Check both the row and column before placing a number.
- When stuck, search for a digit that has only one possible position in a box.
Find your next puzzle
Frequently asked questions
When does the daily Sudoku change?
A new puzzle starts at midnight UTC. All players receive the same board for that UTC date. An open round stays available until you choose Load today or reload.
What does Check do?
Check compares your filled cells with the solution and highlights incorrect entries. Your result includes how many checks you used.
Does Reset give me a different board?
No. Before completion, confirming Reset clears today’s entries, notes, and counters. A completed daily result is locked. Reloading restores saved progress when storage is available.
Is each daily puzzle solvable without guessing?
Yes. A clue is removed only when the remaining puzzle can still be solved with single-candidate deductions. This also ensures a unique solution.