Dan, is this the answer?

The missionaries tie a rope to the boat. One missionary and one cannibal each row over. The 2 missionaries and 2 cannibals pull the boat back to their side. Again, one missionary and one cannibal row over. The remaining missionary and cannibal pull the boat back and row over to the other side.

--Paul

>I may have already given this one, but what the heck, I'll give it again.
>
>There are 3 missionaries and 3 natives. They need to cross a river in a boat that only holds 2. The restraints are that the cannibals can't outnumber the Missionaries on either side because the missionaries feared that the natives would over-power and eat them.