https://books.telegraph.co.uk/Product/Eric-Saunders/Large-Print-Sudoku--Over-250-Easy-to-Read-Puzzles/31363030
Large Print Sudoku : Over 250 Easy-to-Read Puzzles: Eric Saunders: 9781398854291: Telegraph bookshop
Large Print Sudoku : Over 250 Easy-to-Read Puzzles.