Nyora kupfuurira kweiyi ndima - Guðmundur Arnlaugsson aizivikanwawo semutongi wemutambo wechess kubva kutanga kwema1970. Muna 1972, akava FIDE International Arbiter. Muna 1981, aive mumwe wevatongi mumutambo weWorld Chess Championship waAnatoly Karpov naViktor Korchnoi
. Guðmundur Arnlaugsson avewo ari chess muparidzi uye mutsigiri paIceland redhiyo neterevhizheni.