💨 Abstract

An optical illusion challenges viewers to find circles within a pattern of black and white squares on a grey background. The illusion, which appears as shifting 'pretzel' patterns, aims to test observation and creativity. Despite the confusion, the image actually contains four circles. Engaging with such illusions can stimulate brain regions, test IQ, and sharpen the mind. The article also mentions other brainteasers for cognitive benefits.

Courtesy: www.thesun.co.uk