Binairo (also known as "Binary Puzzle", "Takuzu", "Tohu wa Vohu") is played on a rectangular or square grid. The goal is to fill in the grid with digits "0" and "1" according to the following rules: 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. Large Print on top-quality paper Six Puzzles Per PagePerfectly alignedSolutions are given at the end of the bookUse a pencil so you can rub it out and do them all again