The ideal gift for keen Su Doku enthusiastsPosing a greater challenge than standard Su Doku puzzles, this bumper collection of 360 puzzles is for dedicated Su Doku solvers. Selected from the pages of The Times these puzzles will keep even the most eager enthusiasts entertained for hours.Fiendish Su Doku, takes you to the next level.Puzzles in this collection are taken from Times Fiendish Su Doku Books 1, 2 and 3.