What is Sudoku?
Sudoku is a logic puzzle played on a 9×9 grid. Fill the empty cells so every row, column and 3×3 box contains each digit from 1 to 9 exactly once. The digits are symbols: solving the puzzle requires logical deduction, not arithmetic.
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Fill all cells with numbers 1-9 so that each row, column, and 3×3 box contains all numbers exactly once.
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Today's Sudoku challenge
Detailed results are kept for the current month and the previous three months. Older puzzles remain playable without new account results or puzzle points. Lifetime progress is preserved.
Calendar
List
October
Mo
Tu
We
Th
Fr
Sa
Su
| Date | Difficulty | Status |
|---|---|---|
| 27 October 2026 | Easy | Not played |
| 26 October 2026 | Easy | Not played |
| 25 October 2026 | Hard | Not played |
| 24 October 2026 | Hard | Not played |
| 23 October 2026 | Hard | Not played |
| 22 October 2026 | Medium | Not played |
| 21 October 2026 | Medium | Not played |
| 20 October 2026 | Easy | Not played |
| 19 October 2026 | Easy | Not played |
| 18 October 2026 | Hard | Not played |
| 17 October 2026 | Hard | Not played |
| 16 October 2026 | Hard | Not played |
| 15 October 2026 | Medium | Not played |
| 14 October 2026 | Medium | Not played |
| 13 October 2026 | Easy | Not played |
| 12 October 2026 | Easy | Not played |
| 11 October 2026 | Hard | Not played |
| 10 October 2026 | Hard | Not played |
| 9 October 2026 | Hard | Not played |
| 8 October 2026 | Medium | Not played |
| 7 October 2026 | Medium | Not played |
| 6 October 2026 | Easy | Not played |
| 5 October 2026 | Easy | Not played |
| 4 October 2026 | Hard | Not played |
| 3 October 2026 | Hard | Not played |
| 2 October 2026 | Hard | Not played |
| 1 October 2026 | Medium | Not played |
| 30 September 2026 | Medium | Not played |
| 29 September 2026 | Easy | Not played |
| 28 September 2026 | Easy | Not played |
| 27 September 2026 | Hard | Not played |
| 26 September 2026 | Hard | Not played |
| 25 September 2026 | Hard | Not played |
| 24 September 2026 | Medium | Not played |
| 23 September 2026 | Medium | Not played |
| 22 September 2026 | Easy | Not played |
| 21 September 2026 | Easy | Not played |
| 20 September 2026 | Hard | Not played |
| 19 September 2026 | Hard | Not played |
| 18 September 2026 | Hard | Not played |
| 17 September 2026 | Medium | Not played |
| 16 September 2026 | Medium | Not played |
| 15 September 2026 | Easy | Not played |
| 14 September 2026 | Easy | Not played |
| 13 September 2026 | Hard | Not played |
| 12 September 2026 | Hard | Not played |
| 11 September 2026 | Hard | Not played |
| 10 September 2026 | Medium | Not played |
| 9 September 2026 | Medium | Not played |
| 8 September 2026 | Easy | Not played |
Completed on time
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Today's challenge
Easy27 October 2026 • Not played
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Our puzzle books
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Everything you need to know about Sudoku
Learn the rules and try a practical solving tip.
Sudoku rules
- The grid contains nine 3×3 boxes and 81 cells in total.
- Each row, column and box must contain every digit from 1 to 9 exactly once.
- Keep the given digits unchanged and use them to rule out possibilities in empty cells.
Tips
Tip: If a row contains every digit except 7, its empty cell must contain 7. Also check the column and the 3×3 box.