Binary Puzzles

Binary Puzzle (aka Binairo, Binero, Tic-Tac-Logic or Takuzu) is a table in which each cell must contain characters of two kinds. In the original, these are zeros and ones. On our website, these are two types of diamonds. Some of the characters are already there, the rest need to be found. The placement of characters is subject to the following rules:

• Each row and each column must have the same number of characters of the two kinds.
• The same character can only appear in two cells in a row.
• Each row and each column must be unique.