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The objective of the game is to fill all the blank squares in a game with the correct numbers.
There are three very simple constraints to follow. In a 9 by 9 square Sudoku game:
Every row of 9 numbers must include all digits 1 through 9 in any order
Every column of 9 numbers must include all digits 1 through 9 in any order.
Every 3 by 3 subsection of the 9 by 9 square must include all digits 1 through 9.
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