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 subgrids that compose the grid (also called "boxes", "blocks", "regions", or "subsquares") contains all of the digits from 1 to 9.

Every puzzle has a unique solution.

Sudoku is a very good brain exercise game which improves logical thinking of individual person.

This app present you many levels to make gameplay challenging and addictive.

This game contains following features.

1. 4 difficulty level.

2. 500 puzzles for each difficulty level

3. Save and Resume feature

4. Skipping a particular puzzle

5. Hints

6. Highlight/Undo to assist the puzzle solver

7. Nice user interface

8. Easy to use

9. Challenging and addictive gameplay

For more information on sudoku: https://en.wikipedia.org/wiki/Sudoku

So sitback relax and enjoy sudoku.