A free program for Android, by Andrei Brusentsov.

This application is a classic Sudoku puzzle game that will keep you thinking and give your brain a workout. You will be able to solve Sudoku 9×9, a number game based on the logical placement of numbers.

The app is based on a concept called Sudoku logic, which is the basis of all number games. It has an intuitive interface, making it easy to use. The app is designed to help you learn and remember numbers.

It’s easy to use and provides an interface that is intuitive and minimalistic. This application allows you to make marks just like if you were solving a paper puzzle.