The Kids' Book of Sudoku is perfect for ace puzzlers and kids who like a challenge. The puzzles range in difficulty so kids can build up their sudoku skills throughout the book. It includes a simple tutorial which explains how to do the puzzles and reveals invaluable tips and tricks, so the book suits anyone from beginners to the ultimate sudoku-solver. The book also helps to develop mental arithmetic and logic skills. Just in case, all the answers are provided at the back of the book for those who get truly stuck.