Binary Puzzle Books - 400 Easy to Master Puzzles 11x11 (Volume 12)

puzzle (also known as " ", " ") is a logic puzzle that you can solve by using only zeros and ones. The rectangular or square grid should fill the numbers in accordance with the following rules: • Each row and each column contain the same number of digits "1" as digits "0" (or one more for odd sized grids). • The same number can only be in no more than two cells in a row. • Each line must be unique, and each column must be unique.