Commemorating the launch of the original Kindergarten Sudoku book five years ago, it is with great pleasure that we publish a new version of the book. The new version comes with 80 new puzzles especially designed for this happy occasion. The sudoku puzzles in this book are designed for children in kindergarten - ages 4 - 8 years and up. All the puzzles in the book are 4 x 4 Sudoku puzzles designed specially for these children in mind. Sudoku rules are easy - each number 1, 2, 3, and 4 must appear only once in each row, column, or block. All the sudoku puzzles in this book are number puzzles. In addition, there are four levels of difficulty as follows - Easy, Medium, Difficult, or Super Difficult. The solutions to all the puzzles in the book are available at the end of the book. The book has a website at www.PetraBooks.com where you can find more puzzle books for children.