India, Oct. 22 -- Brain teasers are puzzles or questions that make us think in unusual ways. They are not just about right or wrong answers; they challenge our minds to look at problems differently.

They are also great for our brain health. Just like exercise keeps our body fit, solving puzzles keeps our mind active.

Solving them often requires creativity, logic, and careful observation. People of all ages enjoy brain teasers because they are fun and satisfying when solved.

Here's a brain teaser shared on Instagram by @interestingengineering that's challenging people's observation skills.

The brain teaser is a visual puzzle asking people to count all the squares in a geometric picture. It looks easy at first, but on closer look, hidde...