Jigsaw Sudoku X: 200 Medium Jigsaw Sudoku X Puzzles Volume 1: Demarco, Christian: 9781983769689: Amazon.com: Books
200 very easy Sudoku puzzles with answers - Vol 1: Brain training puzzles for children to adults - Vol 1: Birch, Kevin, Addicts, Puzzle: 9781076701534: Amazon.com: Books