Sudoku is a logic-based number placement puzzle.
The objective is to fill a 9×9 grid with digits so that each column,
each row, and each of the nine 3×3 sub-grids that compose the grid (also
called "boxes", "blocks", "regions", or "sub-squares") contains all of
the digits from 1 to 9. The puzzle setter provides a partially completed
grid, which typically has a unique solution.
Completed puzzles are always a type of Latin square
with an additional constraint on the contents of individual regions.
For example, the same single integer may not appear twice in the same
9×9 playing board row or column or in any of the nine 3×3 sub regions of
the 9×9 playing board. This type of particular game can sharpen the mind. It has a lot of benefits so lets play this game.
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