Brain teaser: Extremely difficult optical illusion only the cleverest can solve

Brain teasers are a fun way to test someone’s logical thinking and problem-solving abilities. This optical illusion of a busy library is hiding a lightbulb. According to the creators, if a viewer can spot the lightbulb in four seconds it suggests a high IQ level. But the puzzle is extremely detailed and the lightbulb is well hidden.

In the image, you can see a busy library with children playing a board game on the floor, another sleeping on a book at a desk, and one young girl trying to study.

In the background, there is a librarian carrying a huge stack of books, whilst someone else is up a ladder around the corner trying to find a book. But what you can’t see in the image is a lightbulb.

The creators of the optical illusion have advised viewers to not confuse the hidden light bulb with lightbulbs that are in the lamps on the wall.

While finding the lightbulb is a challenge in itself, the real test is how long it takes you to find it.

READ MORE: Only people with a high IQ can spot the odd letter in time

The creators have set a time limit for this brain teaser of just four seconds. Can you find the lightbulb?

If after four seconds you’re struggling to locate the lightbulb, here are a few clues:

• The lightbulb is somewhere on the right-hand side of the image.
• The lightbulb is yellow.
• The lightbulb is a drawing rather than an object.
• The lightbulb is near the librarian carrying the books.
• The lightbulb is on one of the books on the shelves.

Answers:

1. Wrong

2. A relationship

3. They were both playing different games

4. Your name.

5. What stairs? You live in a one-story house.