Welcome to this enjoyable collection of 100 brand new sudoku puzzles. Each of the sudokus in this book is on a 6x6 grid, and the rules are as follows: - Place the numbers from 1 - 6 once in each row, column and bold-lined box. - Each region contains 6 squares in total, and there are a total of 18 regions in the puzzle. That's all there is to it The beauty of sudoku is the simplicity of this lovely little logic puzzle.