How to make the real checkers

In this article, a group of mathematicians at the University of Massachusetts Amherst have created a new type of checker board that can reliably identify a face based on the way it’s arranged on the board.

The researchers hope to eventually develop a more reliable and more practical version of the board, which would make it possible to test a person’s identity using photos or facial recognition software.

(A full version of this story will be posted Monday on The Washington Post’s website.)