Inside "The Ultimate 1001 Puzzle Book" you"ll find a collection of 1001 amazing puzzles, all in full color, that will have you tied up for months! This is one of the biggest and best puzzle books available today. It features quantity as well as quality, for the puzzles are all tried and tested variations. You"ll find Sudoku and other number puzzlers, logic posers and spot-the-difference, to name but a few!