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By arrangement with The Daily Telegraph
© Michael Mepham 2005

About Sudoku

Sudoku, is a Japanese, fun puzzle game. It requires the player to fill in the 9x9 square grid with the numbers one to nine. The numbers should be arranged in such a way that each row, column and mini-grid contains one of each number. A single error in a Sudoku throws the whole game out.

Read more about Sudoku on Wikipedia


  • The timer starts as soon as the page loads.
  • To put a numbers in the cell, just select the cell and type number.
  • In order to erase a cell type 0 on the cell.
  • Click undo/redo button in order to undo/redo your entry.
  • Click "Reset" button in order to clear all entries. Undo button will not work once you reset the puzzle.
  • For any duplicate entry in a cell/row/column, the number will turn red in colour.
  • Javascript should be enabled in your browser.
  • The browser should accept cookies.
  • If you are playing on an iPhone, go to normal view and then tap on the "Play Another Game" button.