To create a summary of "How Boots Befooled the King," the following five details should be included:
- The first two brothers fail and are punished.
- Everyone thinks the youngest brother is stupid.
- The king offers his daughter and half of the kingdom to anyone who can fool him.
- The younger brother succeeds and is given half the kingdom and the princess.
- Boots might have been the smartest person in the kingdom.
These details capture the main plot points and character dynamics of the story.