https://en.wikipedia.org/wiki/L%C3%A1szl%C3%B3_Polg%C3%A1r
> László is an expert on chess theory and owns over 10,000 chess books. He is interested in the proper method of rearing children, believing that "geniuses are made, not born". Before he had any children, he wrote a book entitled Bring Up Genius!, and sought a wife to help him carry out his experiment. He found one in Klara, a schoolteacher, who lived in a Hungarian-speaking enclave in Ukraine. He married her in the USSR and brought her to Hungary. He home-schooled their three daughters, primarily in chess, and all three went on to become strong players.
Their three daughters:
Sofia: https://en.wikipedia.org/wiki/Zs%C3%B3fia_Polg%C3%A1r
> In 1989, at the age of 14, she stunned the chess world by her performance in a tournament in Rome, which became known as the "Sack of Rome". She won the tournament, which included several strong grandmasters, with a score of 8½ out of 9. According to the Chessmetrics rating system, her performance rating was 2735;[3] one of the strongest performances in history by a 14-year-old.
Susan: https://en.wikipedia.org/wiki/Susan_Polgar
> On the July 1984 FIDE Rating List, at the age of 15, she became the top-ranked woman player in the world, and remained ranked in the top three for the next 23 years. She was also the first woman in history to break the gender barrier by qualifying for the 1986 "Men's" World Championship
And Judit: https://en.wikipedia.org/wiki/Judit_Polg%C3%A1r
> Judit Polgár (born 23 July 1976) is a Hungarian chess grandmaster. She is by far the strongest female chess player in history.[1] In 1991, Polgár achieved the title of Grandmaster at the age of 15 years and 4 months, the youngest person to do so until then.