Large Print Sudoku Variants: Large Print Sudoku 16x16 - 100 Hard Puzzles : Very Difficult Hexadoku with Solutions - Sudoku Variant Puzzle Book for Adults (Paperback) - Walmart.com
Giant 16x16 Sudoku, Paperback by Puzzle Madness (COR), Like New Used, Free sh... 9781978142565 | eBay