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Classical Sudoku app for iPhone and iPad


4.8 ( 4928 ratings )
Lifestyle Entertainment
Developer: Haifeng Li
Free
Current version: 1.1.0, last update: 6 years ago
First release : 02 Oct 2017
App size: 5.61 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 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.
Completed games are always a type of Latin square with an additional constraint on the contents of individual regions. For example, the same single integer may not appear twice in the same row, column, or any of the nine 3×3 subregions of the 9x9 playing board.