Only those with razor sharp vision can spot horse without tail in 5 seconds

Test your vision with this 'impossible' brainteaser that is leaving Brits scratching their heads.

Engaging in puzzles, riddles, and brainteasers is a brilliant way to ignite your competitive spirit and test your mental agility - particularly when you coax family members into the excitement. Research has even found these mini games can help bolster your attention span and improve your concentration levels.

However, this particular brainteaser is so difficult it may also make you want to pull your own hair out. Seriously, you'll need razor sharp vision and rapid reaction skills to crack this one under the tough time limit. Ready? Let's go...

The image above depicts rows of black horses, but one poor animal is missing its tail. You need to find it in just five seconds to prove you have incredible vision. Otherwise, you may need to book yourself in for a trip to the opticians.

We're not giving away any clues for this one, but to save you some precious seconds, why not break down the image into manageable chunks? Dividing it into columns or rows could simplify the task and aid you in spotting the tail-less horse. It's bound to put your problem-solving skills through their paces, but as you read this, your five-second countdown is likely over.

Did you manage to spot it within the time frame? If you're still on the hunt, keep going, but if you're ready for the reveal, scroll down to the bottom of the article.

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If that horse-themed brainteaser was no match for a boffin like yourself - don't worry. Now, it's time to ramp things up a little with these with this insanely hard puzzle. Created by the Government Communications Headquarters(GCHQ) you'll need to have the analytical skills of a spy and meticulous attention to detail in order to solve this one.

So, pop on your 007 thinking caps and get ready to save the world from danger by figuring out which of the following words or phrases is the odd one out. Once you're done, you cancheck your answer here.

• Catwoman
• Deus Ex Machina
• Parishioner
• Pyromania
• Scuba

Up for another mental workout? Check out our collection of tricky brainteasers, riddles, and puzzles here. Or, learn more about your hidden personality traits with these mind-boggling optical illusions.

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