In principle, this impossible math allows for a glue-free bridge of stacked blocks that can stretch across the Grand ...

In the summer of 1975, math prodigy Tanya Khovanova was approached by a teacher named Valera Senderov, who had managed to ascertain a list of these problems, and asked to help solve them.

Despite its simplistic appearance, the problem requires highly advanced math and wasn’t solved until 2014. This week’s puzzle comes from a real problem on a math test given to students in ...