Rules:
1 - everybody has to cross the river.
2- only two ppl on the raft each time
3- the father can't stay with any of his daughters without the mother being present.
4- the mother can't stay with any of her sons without the father being there as well.
5- the thief can't stay with anyone without the presence of the cop
6- only 3 ppl know how to use the raft: the father, the mother and the cop
7- to move ppl, click on them
8- to use the raft, click on the red points
PLAY HERE
Note:**Pls don't post the solution, let others think, ok?