India, Sept. 11 -- Optical illusions are enjoyable because they test how keen our observation skills are. One such puzzle has gone viral, which challenges users to locate three golf balls among a sea of white eggs in just five seconds.

Our minds tend to look for patterns. When given a repetitive picture, like dozens of white eggs, the mind immediately assumes that all the objects in the picture look alike.

In this puzzle, the eggs form a uniform pattern such that the brain finds it hard to identify the fine changes. Despite having the golf balls immediately in our vision, the constant white eggs easily lead us to overlook the concealed golf balls.

The three golf balls are located in the following positions:

One in the upper left corne...