25 Ridiculously Hard Sudoku Puzzles

25 Super Difficult Sudoku puzzles for those who want a challenge!

• | Author: Tristan Anthony
• | Publisher: CreateSpace Independent Publishing Platform
• | Publication Date: Jun 29, 2016
• | Number of Pages: 28 pages
• | Language: English
• | Binding: Paperback
• | ISBN-10: 1534941444
• | ISBN-13: 9781534941441