Can you conquer the impossible color challenge? Try this fun brain teaser and see how you do!

A graphic artist, known for his digital seek-and-find pictures, is testing people's attention to detail with a new brain teaser centered around a spiny succulent. Gergely Dudás of Budapest, Hungary, ...

We're huge fans of riddles and puzzles around here, so it's no shock that a brain teaser making the rounds on the internet — "How many triangles do you see?" — caught our eye. But we didn't expect it ...