He and Klara married in the USSR, whereupon she moved to Hungary to be with him. They had three daughters together, whom Polgár home-schooled, primarily in chess but also in Esperanto, German, Russian, English, and high-level math.[1][5] Polgár and his wife considered various possible subjects in which to drill their children, "including mathematics and foreign languages," but they settled on chess. "We could do the same thing with any subject, if you start early, spend lots of time and give great love to that one subject," Klara later explained.