Sofya Aleksandrovna Yanovskaya, a Russian mathematician of Jewish origin of the 20th century,  a specialist in logic, posed different problems to her students so that they would solve them with perseverance and so that they would continually ask themselves: what am I doing? where am I going? 

We propose you to solve the following mathematical logic problem.

Place the numbers from 1 to 12 in each circle of the star so that the sum of each edge is 26 and the sum of the 6 vertices is also 26.