Sudoku which is sometimes spelled Su
Doku, is a logic-based placement puzzle In The
United States it is better known as Number Place.
The aim of Suduko is to enter a numerical digit from 1 to 9 inclusive in each cell of a 9×9 grid made up of 3×3 sub grids. You start with various digits which are pre-entered in some cells these are referred to as the "givens."
Each row, column, and region must contain only one instance of each numeral. Completing the puzzle requires patience and logical ability. Sudoku initially became popular in 1986 and achieved international popularity in 2005.
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