Trying to solve an optical illusion doesn't always come fast.
Despite how time-consuming they are, brainteasers can work wonders for multiple skills.
Now if you think you've got the patience, the latest puzzle could leave you scratching your head for ages.
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Known as the spinning vortex optical illusion, the image can really hurt your eyes when you look directly at it.
The illusion appears to be moving, but that's where you're totally wrong.
So can you see what's going on? Let us know your thoughts in the comments below…
These images are examples of what are known as physiological optical illusions.
They're caused by the over stimulation of the brain's senses when seeing too much colour, light or movement.
With its purple and yellow vortex-like design, this picture is hypnotic but we can assure you, it's not moving.
In fact, what you see right in front of you is a completely still image.
So how does it work?
It happens when the combination of different patterns, lights and levels trick your mind into thinking it's moving.
Start by concentrating on the centre of the image, then you should be able to see it stop.
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Are you looking for more optical illusions?
Previously, dirty-minded people were left giggling at an optical illusion which involved a smitten couple.
Posting on the Confusing Perspective account, it shows a loved-up pair holding hands at the park.
Also only people with "sharp vision" can spot the golf balls in the optical illusion.
For starters, only six in 10 (60%) of Brits can solve it within the 30 second time period.
Fancy another? Try this optical illusion with an odd word hiding somewhere.
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