Have you ever tried solving the "Einstein IQ Test"?

Question

I managed to complete 3/4 of it when I was 15, it's not difficult. I know the answer now. My pshocology teacher told me he managed to do it as well and he got the same answer.

I heard once another kind of interpretation, that the owner of the fish might not be part of the 5 houses.

What do you think?

Answer 1

I have not.

A link to take it, perhaps?