Sometimes, the simplest mysteries are hiding right in front of us. Take a close look at this photo: at first glance, it appears to show three women sitting together and smiling. Everything seems normal, but something about the scene doesn’t quite look right. Can you spot the unusual detail?

The key is to pay close attention to how two of the women appear to be sitting. At first, your eyes may simply accept the scene as normal, but after looking more carefully, you may notice something strange. They seem to be sitting in a way that makes them appear as though they are floating, almost as if their chairs have disappeared.

This is what makes the image such an interesting optical illusion. Your brain naturally tries to understand what it sees as quickly as possible, often filling in details without questioning them. Because the picture looks like an ordinary moment between three people, you may not immediately stop to examine how they are positioned.

“Once you look carefully, you may notice that they seem to be floating, as though they’re sitting on invisible chairs.” That small detail changes the entire way you see the picture and explains why the illusion can be so easy to miss at first.

So, did you spot the trick? The women aren’t actually sitting on visible chairs—they appear to be floating. If you missed it on your first look, don’t worry. That is exactly what makes the puzzle so effective. Sometimes, all it takes to solve a visual mystery is slowing down, looking at the whole picture, and noticing what has been hiding in plain sight.