Hrqls: no one is a cheater here, only suspect of cheating. you don't know what the guy is doing. how can you prove it?
when my opponent logout after seeing my move every time, i know what is going on, he may not use a computer program, but i am sure that he is looking for some help, most likely he try to find the move by trail and error method. when he find his move on the board and login again.
the reason is: he has no ability to see the move over the board.