You have eagle eyes if you can spot hidden shoe in just 12 seconds in this puzzle

Only people with supersonic vision can spot adorable animal in brainteaser

You have eagle eyes if you can see the hidden cat in four seconds in optical illusion

The Chase's Darragh Ennis' Harry Potter quiz is 'so tough' no one can 'get all five'

Tricky drawing asks movie fans to guess the film – see if you can do it

Only people with sharp vision can spot hidden chip – and it's not easy to solve

The Chase star Darragh Ennis challenges players to Star Wars quiz – and it's 'tough'

You have 'eagle-eyes' if you can spot the pebble among the coffee

Only people with 20/20 vision can spot 'sneaky little frog' within seconds in brainteaser

Only 7 out of 10 people are passing this logic test – see if you can spot odd word

Only people with 20/20 vision can find duck in the stones without zooming in

Brainteaser challenges people to count circles – but many get it wrong

Only eagle-eyed people can spot the circles in square optical illusion

You have a dazzling IQ if you can spot the word 'play' buried in tricky optical illusion

You have the eyes of a sniper if you can find the stone in the coffee beans in under 10 secs

The Chase's Darragh Ennis challenges people to beat his difficult 'movie soundtrack quiz'

Only those with eagle eyes can spot the number 8881 in a sea of 8831s in 12 seconds

Children's maths question leaves adults stumped - and makes their 'head hurt'

You need to be lynx-eyed to spot hidden number 474 in sea of 444s in 20 seconds

People can't work out which skyscraper is closer in mind-boggling optical illusion

Only those with high IQ can spot hidden I among sea of Js in 9 seconds

Tricky SATs grammar question challenges you to add semi-colon to 'rainy' sentence

Easy maths hack guarantees you always win 'how many things are in the jar' game

'Simple' maths puzzle many people still get wrong - can you answer it?

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Brainteasers are puzzles, problems, or questions that are designed to stimulate cognitive processes such as critical thinking, problem-solving, and lateral thinking. They often require creative and unconventional approaches to arrive at the correct solution. Brainteasers come in various forms, including riddles, logic puzzles, maths problems, and word games.

These puzzles can be a fun way to challenge and entertain the mind, and they are often used in educational settings or as recreational activities. They may vary in difficulty, ranging from simple puzzles that can be solved quickly to more complex ones that may require deeper thought and analysis.

Examples of brainteasers include riddles that involve wordplay, logic puzzles where you need to work out the correct answer using a set of rules, and mathematical problems that require innovative approaches. The goal of a brainteaser is to engage your brain in a unique and stimulating way, encouraging you to think outside the box.