The puzzles in this collection of treacherously difficult puzzles will stretch even the most advanced Su Doku enthusiast. You will need to use all of your best

Challenge yourself at home with word and number puzzles This is the seventh title in the Fiendish series - the latest volume of quality previously unpublished p

The eighth title in The Times Fiendish Su Doku series - the latest volume of previously unpublished quality Su Doku puzzles from the puzzle providers to the Tim

The Times Killer Su Doku is dangerously addictive. Here is a collection of 200 of the best Times Killer Su Doku puzzles to wrangle with over the holiday season.