Binary Puzzle: 250 Hard Logic Puzzles 7X7 (Binary Collection)

There are as many digits "1" as digits "0" in every row and every column (or one more for odd sized grids).No more than two cells in a row can contain the same number.Each row is unique, and each column is unique.

• • Author: Mindful Puzzle Book
• • Publisher: Independently Published
• • Publication Date: May 12, 2019
• • Number of Pages: 144 pages
• • Language: English
• • Binding: Paperback
• • ISBN-10: 109794672X
• • ISBN-13: 9781097946723