A new 13-sided shape is the first example of an elusive "einstein" — a single shape that can be tiled infinitely without repeating a pattern. When you purchase through links on our site, we may earn ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Alright, quiz-masters and convergent thinkers, there's another seek-and-find waiting for you to solve it.

Like anything, you can take patterning a shotgun too far. A turkey hunter told me once he spent $1,000 one winter buying XX-Full chokes and magnum loads for his guns, then he patterned them all to ...