I've heard that in Japan, employers give this test to potential employees before hiring them.
Goal: Get everyone to the other side of the river.
Rules:
1. Father cannot be with the daughters unless the mother is present.
2. Mother cannot be with the sons unless the father is present.
3. Theif cannot be left with any of the family members unless the policeman is present.
4. Only the father, mother, and policeman know how to operate the raft so at least one of them has to be on the raft in order for it to move.
5. Only 2 people can be on the raft at at time.
Okay, go to this website. When you get there, click on the Big Blue Dot in the bottom right corner to begin. To move the people, click on them. To move the raft, click on the pole with the red circle on top.
http://freeweb.siol.net/danej/riverIQGame.swf
Let me know if any of you figure it out! I finally did it, but it took me a good while, so I know it can be done!