Stocking Stuffers for Women: Christmas Sudoku: 50 Sudoku Puzzles with Solutions, Keep The Brain Activity in Christmas: Stocking Stuffer Gift Idea for Women (Stocking Stuffers for Adults!): Masters, Santafied: 9798771449098: Amazon.com: Books
Frame Sudoku: A hybrid between Killer Sudoku and Outside Sudoku (Outside Sudoku Puzzle Books): Djape: 9781502820594: Amazon.com: Books