Optical illusions and brain teasers
Optical illusions and brain teasers
Entertainment purposes only: The purpose of this test is not to prove if you are smart or not, a logical thinker or not. The purpose of this test is to develop abstract thinking. Some brain teasers require a lot of imagination, acute vision, and an agile mind.
Entertainment purposes only: The purpose of this test is not to prove if you are smart or not, a logical thinker or not. The purpose of this test is to develop abstract thinking. Some brain teasers require a lot of imagination, acute vision, and an agile mind.

How many colors do you see?
How many numbers are there in this picture?
Which of the following hearts is red?
Are these H2O waves part of a GIF or an image?
U R YY 4 me. Can you read the hidden message behind these letters?
U 8 my apple 3,1415926. Can you guess the hidden message?
Do you see the grey circles among the sea of squares?
Look at the center. What do you notice?
How many colors are there?
Is this illusion curving in or out?
Is this picture becoming brighter or darker?
Are the colors of these cubes identical?
Can you make the number SEVEN EVEN?