Kammala jumla mai zuwa: Guðmundur Arnlaugsson an kuma san shi a matsayin alkalin wasan wasan chess daga farkon 1970s. A shekara ta 1972, ya zama FIDE International Arbiter. A shekarar 1981, ya kasance daya daga cikin alƙalai a Anatoly Karpov da Viktor Korchnoi
Gasar cin kofin gasar zakarun duniya. Guðmundur Arnlaugsson ya kuma kasance mai sharhi da mai tallata wasan chess a rediyo da talabijin na Iceland.