A Sudoku is a puzzle involving a 9x9 grid into which the ... Satisfying these rules is what makes Sudokus a challenge - but it also creates a few mathematic patterns for us to exploit.

You can now play a range of puzzles on our site, from sudoku to crosswords, every weekday. The puzzles will update every weekday at midnight so make sure you bookmark the links to play. Select ...

You can now play a range of puzzles on our site, from sudoku to crosswords, every weekday. The puzzles will update every weekday at midnight so make sure you bookmark the links to play. Select ...