Current version: 1.3, last update: 7 years ago
First release : 02 Nov 2011
App size: 7.99 Mb
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.