When was the last time you exercised your brain? We often focus on physical exercise, but it’s just as important to keep our minds sharp. One fun and engaging way to do this is through picture puzzles. Not only do they exercise our gray matter, but they also provide a lot of enjoyment. And that’s certainly true for this particular picture puzzle that has captured people’s attention for quite some time.

Take a look at the picture above. You might notice some faces lurking within the image. They may not be immediately obvious, but the longer you examine the picture, the more faces you’ll start to uncover.

The challenge is to find as many human faces as possible in under 10 seconds. It’s a race against the clock, so don’t waste any time! Once the timer is up, any additional faces you discover won’t count.

Now, here’s an interesting fact about this picture: it’s not new at all. In fact, it originated back in the 1880s. The faces you’ll see in the picture aren’t random, but rather those of world leaders from that era. Some people even claim to spot faces like Mikael Gorbachev and Margaret Thatcher among them. While these leaders weren’t alive during the 1880s, it’s fascinating that people envision them in this picture.

The true origin of this mysterious image remains unknown, but some speculate that it first appeared in the late 19th century within Harper Illustrated magazine. Regardless of its origins, we want to know how many faces you were able to find in the image. Would you believe there are actually 10 faces hiding within it?

Most people can find a few faces, but very few have the mental sharpness to uncover them all. If you’re curious about the exact locations, don’t worry—we’ll reveal them to you shortly. We hope you had fun with this mind-teaser and were able to find all the hidden faces.