To Play Sudoku place the numbers 1-9 in the cells in such a way that no column, row, or 3x3 square has the same number in it.
The board will warn you if you have conflicting numbers. For instance if you place numbers such that there are two duplicate numbers in the same row, column or 3x3 then that row, column or 3x3 will turn orange.
When you have filled every number sucessfully then the board will turn white.
Green squares are already filled in for you.
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