For example if the same position is going to be forced by the same move by the player, that move becomes impossible. If you're going to have shogi at BrainKing this is an important point as repeating position three times with continuous checks loses for the checking player in shogi.
(hide) If you don't want other users to know what you are doing you can change into cloak mode in Settings (paying members only). (pauloaguia) (show all tips)