New Delhi, Aug. 27 -- Optical illusions are making waves on the internet. Thousands of people have made brain teasers their favorite pastime, as these challenges allow observers to improve their concentration and observation skills. If you like to put your observation skills to the test, we have one such challenge for you. All players have to do is locate 696 in the grid within just 10 seconds.

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At first glance, there is a grid containing the number 686. It seems like 686 is occupying every nook and cranny of the viral optical illusion. However, the number 696 is somewhere cleverly hidden among 686s. All players must do is f...