The optical illusion challenge for the day needs people to put on their thinking caps to find the correct answer. All you get to witness here are two lines and a simple question: Which line is longer?

Optical illusions come in all forms, from mind-melting artwork to photography trickery, but there's one style that never fails to perplex the internet – the humble colour illusion. Fooling the brain ...

This type of riddle is not new, but the simplicity makes it effective. The spacing between the lines and their position on the screen create a false sense of difference. Without a ruler, it is easy to ...

Optical illusion puzzles are very entertaining and puzzling as they are enjoyable, unexpected, and most of the time you cannot figure out how your eyes were able to deceive you that much. These brain ...