I found this on my friend Colette's blog.
(thanks Colette) It is a some type of Japanese IQ test that they are supposedly giving when people apply for a job.
Here are the rules
1) Everyone must cross the river
2) Only 2 people on the raft at a time
3) The father cannot stay with either of the daughters without the mother's presence
4) The mother cannot stay with either of the sons without the father's presence
5) The thief (striped shirt) cannot stay with any family member if the policeman is not there
6) Only the father, mother, and policeman know how to operate the raft.
When you click on the link- click on the blue circle to get started! Click on the people to get them on the raft. Then click on the red pole on the opposite side of the river to move the raft.

This took me a good 10 minutes. It is possible. It did make my head hurt a little though.