The Gazette Montreal, Quebec, Quebec, Canada Saturday, March 27, 1971 - Page 46
World Series
The Challengers knockout matches have been changed from March to May. Korchnoi, USSR - Geller, USSR at Sochi, Crimea; Larsen, Denmark - Uhlman, E. Germany, at Las Palmas, Canary Islands; Petrosian, USSR - Huebner, W. Germany, and Fischer, USA - Taimanov, USSR, both in Holland. Each best of ten games. The following series in July and September.