The river puzzle

In this link :

to start, click in the round blue button


1- only two allowed to get in the boat.
2- you can’t leave the dad with any of the girls while the mom isn’t with them.
3. you can’t leave the mom with any of the boys while the dad isn’t with them.
4. you can’t leave the prisoner with any member of the family without the policeman.
5. only the dad, the mom and the policeman who can operate the boat.

How to play:

-click on any one to get him/her in or out of the boat.
-click on the red button to operate the boat.