Puzzles For Brain Binary - 400 Hard To Expert 13X13

Each cell should contain a zero or a one. No more than two similar numbers below or next to each other are allowed. Each row and each column is unique and contains as many zeros as ones (or one more for odd sized grids)

• | Author: Alexander Rodriguez
• | Publisher: Createspace Independent Publishing Platform
• | Publication Date: Nov 07, 2018
• | Number of Pages: 230 pages
• | Language: English
• | Binding: Paperback
• | ISBN-10: 1729680836
• | ISBN-13: 9781729680834