It's thought that Albert Einstein in the last century, released the following challenge:
In one street there are five houses with different colours.
In each one of them, live a person from different nationality.
Each one of these people likes a different drink and smokes a brand of cigarettes different from the others.
in addition, each one has a different kind of pet.
The question is: "who is the owner of the fish".
Follow the tips to find the answer.