"Banish boredom with quick su doku puzzles! Sharpen your pencils for pages of puzzles divided into easy, hard and even harder levels. Pocket-money perfect for rainy days, car journeys, or wherever you are!With more than 150 puzzles for age 7 and up, this handy-sized book will keep kids entertained, having fun and exercising logic skills as they pore over tricky su doku puzzles. Once you've completed them all, check out the rest of the Brain Buster range with Wordsearches and Crosswords books!"