Rules of the game: Chess.
The rules of chess are very complicated. If you want to learn to play chess, please make a search on
google. This page will only explain how to play on keyja.com.
To move a piece, you can do it in two different ways.
Click on the piece to move. Then click on the square where to move.
Press the piece to move, don't release, and drag it onto the target square.
The promotions into queen are automatic, because of fast games.
Remember you can set the clock parameters in the game options.