http://www.gsart.com.br/midia/riverIQGame.swf
Have a go at the above link. A bit different to penguins etc. Its a japanese IQ test. click the large blue button to start the game.
Some basic rules:
1. Only 2 persons on raft at once.
2. You cannot leave the thief (stripey T-shirt) alone with any family member without the copper being present.
3. You must not leave the mother alone with the sons without the father being there.
4. you must no leave the father alone with the daughters without the mother being there.
5. only 3 people can operate the raft, Mother, Father and Copper.
good luck all, I have done it once, but cannot remember how for the life of me
enjoy
P.S. to the moderators - sorry its not Stanley orientated its only fun