Challenge yourself at home with word and number puzzles This is the fifth title in the Fiendish series - the latest volume of quality previously unpublished puzzles from the puzzle providers to the Times. You don't need to be a mathematical genius to solve the puzzles in this collection of Fiendishly difficult puzzles, it is simply a question of logic. Since the first Su Doku puzzle appeared in The Times in November 2004 they have become...