# Assignment Source: https://www.programmfabrik.de/en/assignment-frontend-backend-developer-job-berlin/ > Code a tic-tac-toe game > Depending on the job you are applying for, you can code in Javascript (ECMA) or C++. > Requirements > > * Use your own code only and start from scratch > * Player can choose the opponent to be human or computer > * Use [L]GPL'ed libraries if necessary, please include copyright notes > * Let us know how long it took you to code the game > > JavaScript version > > * Implement in Javascript so that it works in Mozilla Firefox > * Make use of CSS, provide nice visuals > * Make the back button work > > C++ version > > * Implement in C++, so that i works on the command line under Linux > * The opponent has to be unbeatable