0h h1Oh hi How to play Play Free play New Today's puzzles Settings About Thanks About 0h h1 is a little logic game by Q42. It was created by Martin Kool. The concept is also known as Takuzu or Binary Sudoku. Q42.com · 0hh1.com Rules Three adjacent tiles of the same color in a row or column isn't allowed. Rows and columns have an equal number of each color. No two rows and no two columns are the same. T
