KSudoku
Sudoku puzzle game and solver
KSudoku is a free version of the popular logic game Sudoku developed by the KDE community. The game is to fill a nine by nine grid with the numbers from one to nine filling the rows, columns and three by three squares without repeating a value on them.
KSudoku is a Sudoku game and solver, supporting a range of 2D and 3D Sudoku variants. In addition to playing Sudoku, it can print Sudoku puzzle sheets and find the solution to any Sudoku puzzle. . This package is part of the KDE games module.
How to install KSudoku in Ubuntu
If you are on a supported distro, you can install the application through software center by clicking the below link.
If the above link not working, run the below command in terminal to install ksudoku in Ubuntu
sudo apt install ksudoku