The final title in a trio of books from the Su Doku master, Wayne Gould. Take your skills to a new level with these fiendish, challenging and addictive puzzles to keep your brain sharp all year round.

Wayne Gould is the leading authority in Su Doku - the man who transformed it from a Japanese number puzzle to a worldwide phenomenon.

With its logic and varying levels, Su Doku - `the crossword without words' - is the ideal challenge for your commute, your coffee break or your evening wind-down. The devilishly difficult, addictive puzzles in the Fiendish Su Doku Workout - including 150 previously unpublished - will test your logic and your brainpower to the limit.