YOU could have a high IQ if you can spot which dice has seven spots instead of six.

The already difficult optical illusion has been made even harder by its 11-second time limit.

This mind-melting image is filled with dice but can you spot the odd one out?

There are dozens of rolling cubes across this testing photo.

They are all against a purple background but players need to keep their focus on the dice.

Most of these items are the traditional dice with numbers going from one to six.

Eagle-eyed players must be able to spot the rogue one in time.

This fun graphic has been created by gaming company Casumo.com in hope of discouraging cheating in gambling.

This illusion is particularly difficult as it can be tricky to differentiate the different dice.

Some of these cubes are overlapped, so some of their dots appear to blend in.

Here is a clue for people running out of time.

Focus on the left side of the photo.

Here is a second hint for people who are struggling.

You might be able to find the seven-spotted dice towards the bottom of the image.

Optical illusions can also be a great way to test your senses and mental cognition.

They can force people to look past clear and obvious images.

This process can help to stimulate several parts of the brain at the same time.

If you were unable to find the rogue dice do not worry as the answer is further down.

Why not try some more brain teasers that will test your mind, below?

Some of these illusions are animal-themed.