Try this out... it took me a while but i got there in the end!
http://freeweb.siol.net/danej/riverIQGame.swf
Apparently this is an IQ test given to job applicants
in Japan: "Everybody has to cross the river"
The site is in Japanese so ill post the english instructions here:
To start, click on the big blue circle.
The IQ test rules are:
1. Only 2 persons on the raft at a time
2. The father can not stay with any of the daughters
without their mother's presence
3. The mother can not stay with any of the sons
without their father's presence
4. The thief (striped shirt) can not stay with any
family member if the Policeman is not there
5. Only the Father, the Mother and the Policeman know
how to operate the raft
6. To move the people click on them.
7. To move the raft click on the pole on the opposite
side of the river