Daily Sudoku (SudokuWiki)

About Daily Sudoku (SudokuWiki)

SudokuWiki.org is a reference site for sudoku solving techniques, built around Andrew Stuart's online solvers and strategy articles. The Daily Sudoku is its main daily puzzle and has been running for a long time: the number passed 6,800 in October 2026. Every visitor sees the same numbered puzzle on a given day.

The page offers four grades each day, so beginners and experienced solvers can each find a fitting grid, and an archive lets you go back to earlier days. The player supports pencil notes, a prefill option that fills every empty cell with all candidates for those who prefer elimination, automatic clearing of notes, a number pad for phones and keyboard control, and you can print the puzzle instead.

Because the site is built around teaching strategies, a stuck solver can open the puzzle in the SudokuWiki solver and see which named technique unlocks the next step.

It suits sudoku players who want a reliable daily grid at their own level and who are interested in learning advanced techniques.

How to play Daily Sudoku (SudokuWiki)

1. Open The Daily Sudoku on SudokuWiki and pick a grade.
2. Fill the grid so every row, column and 3x3 box holds 1 to 9 once.
3. Enter numbers in cells, using notes for candidates.
4. Use the solver if you want to learn the technique for a hard step.
5. Come back the next day, or catch up from the archive.

Tips

• Try prefill notes if you like to eliminate candidates rather than add them.
• Work through the grades upward to build technique.
• Read the strategy articles for patterns such as X-Wing and chains.

Questions