數獨是一種基於邏輯的數字 - 安置難題。這versiob是無廣告。
This versiob is ad-free. Free version of the game with advertising is also aviable.
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.