only people with perfect eyesight will be able to finish it in less than 20 seconds.

Doing puzzles like this one on a regular basis can help your brain work better and test your patience.

How long does it take you to find the white balls?

In this bright puzzle, can you find the seven white balls?

The picture was made by Betting.com to celebrate the start of the UK Snooker Championship over the weekend.

The people who made the game say that it takes people 20 seconds on average to finish it.

How long does it take you to find all the white cue balls?Because there are so many colors and the background is white, this brainteaser is extra hard.

Out of all the red balls, only the black ones really stand out.

To find the white balls, look for ones that are a little more cream-colored than the background.

For those still having trouble spotting them all, the answer is revealed below. 

For those still having trouble spotting them all, the answer is revealed below. 

Christmas optical challenge:You have to try and find a Christmas stocking in nine seconds