Nathan Joseph Harry Divinsky (October 29, 1925 – June 17, 2012) was a Canadian mathematician, university professor, chess master, chess writer, and chess official. Divinsky was also known for being the former husband of the 19th prime minister of Canada, Kim Campbell. Divinsky and Campbell were married from 1972 to 1983. Early life, education, professional career He was born in Winnipeg, Manitoba, in 1925, and was a contemporary and friend of Canadian Grandmaster and lawyer Daniel Yanofsky. Divinsky received a Bachelor of Science from the University of Manitoba in 1946. He received a Master of Science in 1947, and a PhD in Mathematics under A. A. Albert in 1950 from the University of Chicago after which he returned to Winnipeg and was on the staff of the Mathematics Department of the University of Manitoba for most of the '50s. Divinsky then moved to Vancouver where he served as a mathematics professor, and also as an assistant dean of science, at the University of British Columbia in Vancouver, where he spent the remainder of his professional career. He was featured in many segments relating to mathematics and chess on the Discovery Channel Canada program @discovery.ca, now called Daily Planet. During the first two seasons of the show, he presented a weekly contest segment emphasizing math puzzles. Divinsky served on the Vancouver School Board, from 1974 to 1980, and was the Chair from 1978 to 1980. He served as an alderman on Vancouver's city council from 1981 to 1982. Chess life Divinsky learned his early chess as a teenager at the Winnipeg Jewish Chess Club, along with Yanofsky. He tied for 3rd–4th places in the Closed Canadian Chess Championship, held at Saskatoon 1945, with 9.5/12, along with John Belson; the joint winners were Yanofsky and Frank Yerhoff at 10.5/12. In the 1951 Closed Canadian Chess Championship, held at Vancouver, Divinsky scored 6/12 to tie for 5th–7th places. He won the Manitoba Championship in both 1946 and 1952, and finished runner-up in 1945. He tied for first place in the 1959 Manitoba Open. Divinsky scored 7.5/11 at Bognor Regis 1966, finishing in a tie for 7–13th places. He represented Canada twice at the Chess Olympiads, in 1954 at Amsterdam (second reserve board, 0.5/1), and in 1966 at Havana (second reserve board, 4.5/8). Divinsky served as playing captain for both teams, and was the non-playing captain for the 1988 Canadian Olympiad team. Divinsky attained