Ready for a visual challenge that will put your observation skills to the test? At first glance, these two cartoon-style images look exactly the same—a smiling woman snapping a selfie in front of Big Ben, coffee in hand.

But if you look closer, you’ll find 15 subtle differences between the two. They’ve driven thousands of puzzle lovers up the wall.

Start By Observing Carefully

Before diving in, take a moment to study both images. This isn’t a race—success here is all about focus and careful observation.

Use your finger or a pen to track what you find—you might be surprised by how much your mind fills in automatically without realizing.

Check the answer!

Let’s break it down from top to bottom, left to right. These are the 15 differences that appear between the two versions of the image:

1. A small cloud in the top left corner is missing in the right-hand image.
2. The airplane in the sky is facing the opposite direction.
3. Big Ben’s clock face has a slight design difference.
4. The woman’s hair is purple in one image and green in the other.
5. Her left earring has disappeared in the right image.
6. The coffee cup has an extra stripe in one version.
7. The buttons on her shirt differ—there are two in one image, three in the other.
8. A window on the building in the background is gone.
9. The red car in the background is missing its side mirror.
10. A traffic cone next to the dog has vanished.
11. The dog’s collar is missing in the right-hand version.
12. A dog bone appears only in the right image.
13. A piece of trash on the ground is gone in the second image.
14. A hole or patch shows up on her pants in one version but not the other.
15. An orange cat has popped up beside the woman’s leg in the right-hand image—it’s completely absent in the first.

Some of these might seem obvious now, but others—like the missing window or plane direction—require much closer inspection.

Tips to Sharpen Your Spot-the-Difference Game

If you didn’t get all 15 or want to boost your skills for next time, here are a few helpful tricks:

• Start at the edges. Most people focus on the middle—so check the corners and borders where sneaky changes often hide.
• Scan in an orderly way. Whether it’s left to right, top to bottom, or diagonally, follow a consistent path to avoid skipping anything.
• Zoom in. If you’re doing this digitally, use the zoom tool. Some differences are so small they’re nearly invisible without it.
• Practice often. The more puzzles you do, the more your brain trains itself to pick out minor details faster.

Your Turn—How Did You Do?

So how many differences did you catch before checking the answers? 10? 12? Did you manage to spot all 15?

Let us know in the comments, and challenge a friend to beat your score. You’d be surprised how competitive a simple spot-the-difference game can become.