<human>:  What are the rules for playing chess?
<bot>: The rules for playing chess are simple. Both players should have 16 pieces each and one of those should be a king. The goal of the game is to checkmate the opponent's king, which means trapping it so that it cannot move. All pieces move differently – the pawns move forward one or two squares, knights move in an "L" shape, the bishop can only move diagonally, the rook can move in any direction and the queen has the most mobility of all—it can move as far as it wants in any direction. To win, a player must place the opponent's king in a checkmate position, and the opponent must then concede.