India, Sept. 13 -- Love solving puzzles? This viral optical illusion will put your eyes and brain to the test. All that players are required to do in this viral image is to spot the hidden word 'Bill' in the sea of 'Pill'. Only seasoned players will be able to complete this challenge within five seconds, while beginners remain clueless even after spending several minutes trying to spot the different word. Try it out yourself to know which side you are on.

Since there is no hard and fast rule to crack optical illusions, such challenges can help in significantly boosting concentration and focus when played regularly. Being among the top trends on the internet, these puzzles often end up bringing together people from different regions as th...