Big Brother's Birthday Challenge At Sudoku Classic - Hard: Complete 50 Sudoku Puzzles In 50 Days

A unique birthday gift for a brother who's challenged to complete 50 hard Sudoku puzzles in no more than 50 days. Can he do it?

• • Author: Mauricio Vergara
• • Publisher: CreateSpace Independent Publishing Platform
• • Publication Date: Jul 28, 2016
• • Number of Pages: 110 pages
• • Language: English
• • Binding: Paperback
• • ISBN-10: 1535550899
• • ISBN-13: 9781535550895