High Quality Content by WIKIPEDIA articles! William Thomas Tutte, OC, FRS, (May 14, 1917 May 2, 2002) was a British, later Canadian, codebreaker and mathematician. During World War II he broke a major German code system, which had a significant impact on the Allied invasion of Europe. He also had a number of significant mathematical accomplishments, including foundation work in the fields of combinatorics and graph theory. Tutte was born in Newmarket in Suffolk, the son of a gardener. At age 18 he studied chemistry at Trinity College, Cambridge University. As a student he worked on the problem of squaring the square.