Great Big Giant Book of Sudoku Author:Richard Manchester Great Big giant Book of Sudoku is a numerican brain-teasing collection of 696 puzzles. From easy to hard, including 94 special challenger puzzles for the accomplished sudoku solver, this compilation of puzzles is designed for all levels of expertise. With 200 easy puzzles perfect for the beginner adn solving direction instructions to let you beg... more »in, this is the perfect collection to sharpen your sudoku skills. Whether you are new to these super popular puzzles or already a dedicated sudoku solver, this outstanding collection will give your hours of entertainment, sharpen your wit and tickle your mind!« less