PARTICULARLY HARD SUDOKU PUZZLE BOOK #23: The Book For Hard Sudoku Puzzle Lovers That Are Constantly On The Go (Become The Sudoku Master And Improve Both Your Memory And Logic)

by Masaki Hoshiko Paperback details (United States). ISBN: 978-1-0966-0503-4 ISBN-10: 1-0966-0503-1 Independently published · May 2019