In 1970s Communist Budapest, László Polgár set out to prove a radical theory: "Geniuses are made, not born." His canvas was his three daughters; his medium was chess. Isolated from school and society, the Polgar sisters were subjected to a grueling psychological experiment that transformed them into world-class chess masters. But beneath the grandmaster titles lies the raw, authentic reality of a Hungarian-Jewish family surviving totalitarian oversight, societal backlash, and deep-seated prejudice. This is the definitive, unvarnished story of an extraordinary family experiment where genius was forged, and identity was fiercely protected.