I love puzzles.
Try this one out! It stomped me for about 20 minutes. hehe. But i figured it out! Woot! Woot!
Link to puzzle:
http://freeweb.siol.net/danej/riverIQGame.swf (the website is in a foreign language so click on the circle)
Here are the clues:
Everybody has to cross the river;
Maximum 2 persons on the raft at a time;
The father can not stay with any of the daughters without their mother's
presence;
The mother can not stay with any of the sons without their father's presence;
The thief (striped shirt) can not stay with any family member if the
Policeman is not there;
Only the Father, the Mother and the Policeman know how to operate
ENJOY AND GOOD LUCK!!!!!!!!!! :-D