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Binary puzzle
Binary Puzzle 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.

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