"Der Spiegel" compared judging compulsory figures to the work of forensic scientists. After the skaters completed tracing figures, the judges scrutinized the circles made, and the process was repeated twice more. According to Randy Harvey, compulsory figures took five hours to complete at U.S. National Championships and eight hours at World Championships. At the 1983 European Championships, the compulsory segment began at 8 am, and lasted six hours.