Now available in all good bookshops

The Sudoku Book

An introduction with 101 puzzles

HH | Amazon UK | USA

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  • Click the "today" button to play today's Daily Sudoku online.
  • Click a square and enter numbers using the keypad. Use the space bar or delete to empty a cell.
  • Add and remove "pencil marks" by holding down the <Ctrl> or <alt> key.
  • Input a puzzle, or partially completed puzzle, and click "Print" for a printable page.
  • Click Help for more description of the available functions.
  • If this page doesn't work as you expect then take a look at the requirements list.


auto advance
auto check
auto sweep


Difficulty: unknown

Play any Sudoku online

Click the "Today" button for today's Daily Sudoku, visit a puzzle in the archive and click "Play online", or enter a puzzle from any other source.

Want a nice printable copy of a puzzle from a newspaper?

Input the numbers above and click "Print".

Finished it?

Input the starting clues and check the solution using the "Solve" button.


Input a half completed puzzle and the Draw/Play can give you a hint.

This puzzle is impossible.

Draw/Play will verify the validity of any puzzle.