Breaking Through: How The Polgar Sisters Changed The Game Of ChessHardback, 320 pages, 2005 Everyman Chess Breaking through is the inside story of the lives of the famous Polgar sisters. The three sisters, born in Hungary, have taken the chess world by storm over the past two decades. All three achieved grandmaster results in their teens and followed up their early promise with astonishing achievements. In 1989 Sofia scored an incredible 8 1 2 9 in a powerful tournament in Rome; in January 1991 Susan became the