Only 2 people on the raft at a time
The Father cannot stay with any of the daughters, without their Mother's presence.
The Mother cannot stay with any of the sons, without their Father's presence.
The thief (striped shirt) cannot stay with any family member, if the Policeman is not there.
Only the Father, the Mother and the Policeman know how to operate the raft
Can you get them all to the other side?