You should change the software so that the scoring table can only be cleared if BOTH players have cleared it.  When you are trying to check the score, count prisoners, see if the server has scored correctly etc., your opponent can wipe off the scoring table quickly and ask you for another game.  Especially if the server has calculated improperly in your opponents favor.

BOTH players should have ample time to review the scoring table.  It only makes sense.  Therefore the scoring table should only be released when BOTH players have had ample time to review the scoring table and THEN release the table.  It only makes sense.