Infinite Series

The Assassin Puzzle

Imagine you have a square-shaped room, and inside there is an assassin and a target. And suppose that any shot that the assassin takes can ricochet off the walls of the room, just like a ball on a billiard table. Is it possible to position a finite number of security guards inside the square so that they block every possible shot from the assassin to the target?

The Assassin Puzzle

9m 12s

Imagine you have a square-shaped room, and inside there is an assassin and a target. And suppose that any shot that the assassin takes can ricochet off the walls of the room, just like a ball on a billiard table. Is it possible to position a finite number of security guards inside the square so that they block every possible shot from the assassin to the target?

Similar Shows

PBS PASSPORT

Stream tens of thousands of hours of your PBS and local favorites with WETA+ and PBS Passport whenever and wherever you want. Catch up on a single episode or binge-watch full seasons before they air on TV.