Facebook is virtually the most using social media in the world. You might be using facebook app and its messenger app just to chat with your friends. Hmmm! Did you know that you can also play a secret chess game with your friends on your messenger app? Yes, you can play and it is quite easy too.
All you have to do is to send some text commands to play the game.
Without the use of an external software.
Learn few steps/command to play chess on facebook @
http://www.helyzakande.com/2016/02/how-to-play-secret-chess-with-your.html