None There are no time limits in the game.
Both players may take as long as they want to make a move. This could be used for friendly games and games when network problems cause large delays in player's moves. In games with no time limit, it is possible to load the game and make a move even when your opponent is not present. In games with time limits, you cannot load the game when your opponent isn't available to join you. Absolute An absolute time limit gives each player a fixed amount of time at the start of the game.