 Complete the following phrase:  At the 1967 Interzonal, held at Sousse, Tunisia, Fischer scored 812 points in the first 10 games, to lead the field. His observance of the Worldwide Church of Gods seventh-day Sabbath was honored by the organizers, but deprived Fischer of several rest days, which led to a scheduling dispute, causing Fischer to forfeit two games in protest and later withdraw, eliminating himself from the 