Sudoku is a logic-based, combinatorial number-placement puzzle. In classic sudoku, the objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid contain all of the digits from 1 to 9.
- Publisher : Goodwill Publishing House; New edition (25 April 2019)
- Language : English
- Paperback : 96 pages
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