Viktor Korchnoi
Korchnoi won the next Candidates' cycle to again earn the right to challenge Karpov in 1981. The match, held in Merano, Italy, was held in an atmosphere of political tension. Korchnoi's wife and son were still in the Soviet Union. His son was promised that he would be allowed to join his father, if he gave up his passport. When he did so, he was promptly drafted into the Soviet army. In spite of protests, Korchnoi's son was arrested for evading army service, sentenced to two and a half years in labour camp, and served the full sentence. After the release, he was again refused permission to leave the USSR. In 1982, six years after Korchnoi's defection, his son finally succeeded in leaving the country.