You might have already understood what you have to do right? You just have to stare at the black dot in the middle. Stare it long enough concentrating on nothing else except the dot and you will find that the blue surfaces disappear suddenly. Although, the image might have looked so simple to you in the beginning, the final effect of the illusion is really something right? We are sure that the people who like disappearing effects, will like this simple yet powerful illusion.