Only a select few can spot every hidden face in this tree. Can you find them all?

If you’re someone who loves stretching your mind and testing your perception with optical illusions, then I truly admire you.

I’ve never been good at them myself. When I was six, my grandmother gave me a “train your brain” activity book for my birthday. It sat untouched on my shelf until I was about sixteen, and even then I couldn’t make sense of half the puzzles hidden inside.

Still, optical illusions and brain games remain incredibly popular across the internet. People everywhere enjoy challenging themselves by trying to interpret tricky images and spot hidden elements that are sitting right in plain sight.

With that in mind, I thought it would be fun to share one I came across recently. And let me say, it completely beat me. I can admit I was not blessed with the sharpest observational skills. In the puzzle below, your mission is to count all the faces concealed within the “National Leaders Tree”…

It’s not clear where this image originally came from, but it’s spreading quickly online as people try to outdo one another in spotting every hidden face.

Everyone can clearly see the two faces at the bottom of the tree, but things get interesting when you start searching for the rest.

Apparently, the number of faces you identify is supposed to reflect something about your memory.

Of course, there are far more scientific ways to measure cognitive ability, but if you’re up for the challenge, jot down the number you find. When you’re ready, scroll down to see what your result might suggest.

2 to 4 faces
As mentioned earlier, the two bottom faces are obvious. But if you only manage to find one or two more, it may hint at possible memory difficulties.

5 to 6 faces
If you spotted more than four, you’re already doing better. Keep searching. But if you top out at five or six, it could suggest you may be at risk for conditions like dementia or Alzheimer’s.

7 to 8 faces
This range indicates your memory is functioning at a normal, acceptable level, though it may not be exceptional. Regular practice with puzzles like this can help strengthen it.

More than 9 faces
If you found nine or more, then your memory and facial recognition abilities are considered excellent.

Did this challenge get your heart rate up? Good. Take a look below to see where most of the hidden faces are tucked away.

How many famous faces were you able to get from the picture? Let us know in the comments box below!