The mathematicians' meeting of the year was a disaster. Pierre de Fermat, the great 17th century mathematician, was supposed to give a talk about his famous "Last Theorem" but he was a no-show. The other attendees were left standing around, wondering what to do with their fancy calculus notes.
It turned out Fermat had simply gone to his neighbor's house, where he was busy trying to solve the "Last Puzzle". His neighbor, a clever cat lady, had set up a puzzle that had been driving Fermat mad for weeks.
The meeting was a bust, but the mathematicians decided to have some fun with it. They started a game where they tried to solve Fermat's puzzle, but it only led to more despair.
Fermat's Puzzle Fermat's Neighbor's House Last Theorem