Here's a new challenge for you. In this image where every row and column is filled with the letter F, you have to find an odd letter. Optical illusions, like this one, are always captivating.

Optical illusions have fascinated scientists ... Your eyes may trick you into seeing only Hs, but don’t fall for the illusion! Some letters may blur together, making it hard to find the odd ...

This optical illusion is tricky because the letters aren't immediately obvious despite the short amount of time you have to find them. The lack of objects to inspect also makes it difficult.

This brainteaser challenges your logical reasoning by asking you to find the letter 'W' hidden among ... we present to you an incredible optical illusion task where you must identify a "W" among ...

That’s where optical illusion IQ tests come in. These puzzles challenge your mind, pushing your perception limits. Spotting hidden objects or letters in a cluttered design takes more than just ...