Sudoku (Japanese: ?? listen (help·info)?); English pronunciation: /su??do?ku?/ soo-DOH-koo) is a logic-based,[1][2] combinatorial[3] 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.Based on anokusource code here https://github.com/spicysquid/andoku