Now a days in indian software companies, there is trend to make hiring through online skill test. Such a website is techgig.com.
On Techgig, there was skill test for front end developer. In that we have to develop sudoku game, which have facility to save game and get game from browser's local storage. I am not frontend developer and i doesn't wanted to change my job, but this problem definition looked exciting and so i decided to give it try.
After completing game, it was looking as below.
If you want to dig into code goto my github project.