# 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 # Solution ## Time spent * ~0.5 hours to set up the project; * ~5 hours to implement game board serialization, tic-tac-toe rules and game solver (with tests); * ~1 hour to set up the backend / frontend structure with JSX templating and static resources; * ~2 hours to implement progressively enhanced form and query string value trackers (both on backend and in web components); * ...