Everyone can see the Gs – but you have 20/20 vision if you spot the odd letter out in less than 19 seconds

SIT tight and prepare yourself for a visual test that might send you crosseyed.

Everyone can see the Gs in this game - that's the easy part.

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But you have 20/20 vision if you spot the odd letter out.

You have a relatively generous amount of time for this task, a full 19 seconds.

Don't get too relaxed, however, because you are going to need all of the allotted time.

This visual puzzle from Brightside is a challenge to your observational abilities.

Your cognitive skills will also be stimulated in this task.

By the time it's game over, perhaps you will have gained a deeper understanding of problem-solving skills.

The elusive odd letter concealed within this picture is almost hiding in plain sight.

While you tear your hair out, it might be worth remembering you are honing your observational and reasoning skills by taking part in these tests.

So your time is not wasted, though such exercises can be infuriating.

It will certainly test the limits of your mental acuity.

We can give you a clue if you are struggling to find the answer.

To unravel the mystery, divide the image into quarters and examine each section.

Pay close attention to the corners where vital clues may be hidden.

Should you require assistance, a hint awaits you on line seven.

If success has eluded you, we have the answer for you below.

Better luck next time in your gaming escapades.

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And for those who spotted the odd letter, you deserve a huge pat on the back for your exceptional observational abilities.

Perhaps your appetite for more games like this has not been sated.

We have dozens for you to choose from.

They are suitable for all ages, abilities, and levels of patience.

We've gone for something more fishy this time.

Everyone can see the octopuses in this game, but can you see the fish?

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You have the eyes of a hawk if you can spot it in under ten seconds.

The sneaky little fish is hiding well and is tricky to spot.

But we can help you out with a clue.

If you need a hint, consider looking for an extra yellow eye in the photo.

Need even more assistance? Turn your attention to the top right corner.

We can put you out of your misery, however, if this little guy's position has beaten you.

The answer is highlighted for you below.

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