One idea could be to have the warstack for a door show the impossible game early in the chat and ask whether this door takes you further toward your impossible game, yes/no. It would force me to consider whether this is a door that takes me to my impossible game, and if not, delete it and select one that does. That could even be the "no" fork. If answer no, come up with a door that does take me to my impossible game, add to hot list and then move across to the door for the week.