In 1936, at the legendary Café Szkocka in Lviv, Polish mathematician Stanisław Mazur wrote Problem 153 in the famous Scottish Book. This café was the meeting place for brilliant mathematicians who would gather to discuss and pose challenging mathematical problems. Mazur was so confident about the difficulty of his problem that he offered an unusual reward for its solution - a live goose.

For decades, the problem remained unsolved despite attempts by mathematicians worldwide. The goose became a symbol of one of the most challenging open questions in mathematics.

In 1973, Swedish mathematician Per Enflo finally solved Problem 153, proving that Mazur's conjecture was incorrect. Enflo was awarded the legendary goose for his breakthrough solution. Problem 153 became famous not just for its mathematical significance, but as a symbol of persistence and creativity in science.