Sudoku Challenge 1This isn't your Grandmother's Sudoku Puzzle BookFor the more experienced Sudoku puzzlerEasy to read one puzzle per pageLARGE PRINTEasy, Medium, Hard & a few Very Hard just for funYou decide difficulty level for yourself after each puzzleSudoku Challenge 1 is fun for all ages, even Great GrandmothersSudoku Challenge 1 of 5Bringing Sudoku to a new Challenging Level