"Proba" is a novel by the Ukrainian writer Pavlo Zagrebelny. In this book, the author explores the theme of the lost generation, the struggle with one's own identity and the search for a new meaning in life. The main character finds himself in a difficult life situation where he has to face his beliefs, fears and ambitions. He is looking for a way out of this difficult situation, trying to understand himself and his place in the world. However, the more the hero tries to find answers to his questions, the more he delves into the unknown and uncertain. Passed tests become a kind of "test" for him, which requires him to make important decisions and change his attitude to the world. "Proba" is a book that captivates the reader from the first lines, provoking in him deep thoughts about life, self-discovery and internal transformations.