Some optical illusions They seem pretty simple to solve, but they're actually incredibly difficult. Despite not having images colors and hidden drawings, this optical illusion with letters will challenge your vision. Were you curious to test your skills? Then check out this article in its entirety!
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Find some "b" letters hidden in a sea of "d"s
The letters "b" and "d" are very similar, but those with good eyesight can quickly differentiate them. Take a look at the image below and see how many letters b you can find. Don't forget to calculate how long it takes you to do this!

How many letters “b” are there?
If you're having trouble finding the different letters, here's a great tip: there are 4 "b" letters between the "d" letters above. Look at the picture again and try to find them.
Where are the letters “b”?
Haven't found any "b" yet? Well, don't be sad. You will have other opportunities to test your vision on optical illusions. Check the template below and find out where the letters “b” are.
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- First “b”: in the seventh column from left to right and in the second row from bottom to top.
- Second “b”: tenth column from right to left and third row from top to bottom.
- Third “b”: Nineteenth column from right to left and fifth row from top to bottom.
- Fourth “b”: ninth column from left to right and fifth row from top to bottom.
What does it mean to find the letter b quickly?
If you managed to find all the letters “b” in a few minutes, congratulations! Not everyone has this keen eye. Chances are you are a very observant person and can find details in the world that no one else sees.
For those who struggled, the good news is that observation is a virtue that can be improved by brain stimulation.