The Times Difficult Su Doku Book 2 - 200 Challenging Puzzles from the Times

Quiz your family at home with crosswords, puzzles and games. A collection of 200 Difficult Su Doku puzzles of the highest quality from The Times newspaper. Perfect for the intermediate Su Doku solver in need of a constant supply of challenging puzzles, this book is guaranteed to provide hours of absorbing, brain-stretching entertainment.