Are your eyes sharp enough to spot what others miss? This optical illusion puzzle is taking the internet by storm and challenging brains around the globe. The question is simple: Can you find the hidden number “0” among a sea of 6s? But don’t be fooled—it’s trickier than it looks!
The Challenge: Can You Find the Hidden 0?

Take a close look at the image (or imagine it): dozens of number 6s are scattered all over the screen in a grid. But hidden somewhere among them is a sneaky number 0.
At first glance, all the digits seem identical. But with some focus, you’ll notice that one of them is slightly different—the curve, the alignment, or the inner spacing might give the 0 away.
This kind of puzzle is called a visual or optical illusion challenge, designed to test your powers of observation.
Your mission: Set a timer for 10 seconds. Can you find the hidden 0 before time runs out?
Why It’s Good for Your Brain
This isn’t just a fun game—it’s actually a brain-boosting exercise! Here’s why:
- Improves Focus: Your brain needs to filter out distractions and zone in on the details.
- Boosts Pattern Recognition: Spotting differences in shapes helps train your brain to recognize subtle patterns.
- Enhances Visual Perception: It sharpens your eyes to notice contrasts and alignments quickly.
- Develops Patience and Persistence: Not finding the 0 right away encourages your brain to stay calm and continue searching.
Studies show that brain teasers like this can keep your mind agile and even delay cognitive decline with consistent practice.
The Explanation: How These Illusions Work
The human brain is wired to recognize patterns. In a grid full of nearly identical numbers like 6, your brain quickly “assumes” everything looks the same and begins to tune out small differences.
The number 0, although very similar to 6 in shape, lacks the top stroke. But the brain can easily overlook this if it’s expecting repetition. That’s what makes the puzzle challenging—your mind is working against its own shortcuts!
Solution and Results
Ready for the answer?

If you’ve already tried spotting the 0 and want to check your result, here’s the solution:
The hidden 0 is usually placed somewhere near the center or one of the corners of the grid to blend in and trick your vision. It has a perfect oval shape with no tail or opening at the top like a 6.
Spotted it? Congrats—you’ve got a sharp eye!
Missed it? No worries! These puzzles are designed to be hard. The more you practice, the better you get.