Welcome to the obsession known as Sudoku. This book will provide you with hours of fun as it contains 576 never before published computer generated Sudoku puzzles. Puzzles range in difficulty from easy to medium, hard and very hard. You get a nice equal mix of all types grouped by difficulty or if you are feeling adventurous randomized for your pleasure. Each puzzle comes with a difficulty rating (on a 100 point scale) established by a sophisticated computer algorithm and a complete solution just in case you get stuck.