Here is sort of a brain teaser game (it's in Chinese) ... the object is to get everyone across the river.
Click on the large blue circle to start, click the people to get on and off the raft, click the red poles to move the raft.
The are rules are:
1. Everybody has to cross the river.
2· Maximum 2 persons on the raft at a time
3· The father can not stay with any of the daughters without the mother.
4· The mother can not stay with any of the sons without the father.
5· The thief (red head in striped shirt) can not stay with any family member if the Policeman is not there.
6· Only the Father, the Mother and the Policeman know how to operate raft