Your villagers can build only 3 huts, so once you encounter a housing shortage after those huts are finished, you have reached the maximum village population. The last 3 puzzles are different from the first 9, since dragging villagers around the island won't give you any clues.

You can find out how to get the specific help you need by checking out
this post. People have asked us not to put solutions to the puzzles in the forum where they can inadvertently run into them.
