Buuxi weedhan soo socota: Guðmundur Arnlaugsson waxaa sidoo kale loo yaqaanay garsoore tartanka shaakada laga soo bilaabo horraantii 1970-yadii. Sanadkii 1972, wuxuu noqday Garsoore Caalami ah oo FIDE ah. Sanadkii 1981, wuxuu ka mid ahaa garsoorayaasha Anatoly Karpov iyo Viktor Korchnoi
Ciyaarta horyaalka adduunka ee shaakada. Guðmundur Arnlaugsson wuxuu sidoo kale ahaa faallo iyo dhiirrigeliye shaashad raadiyaha iyo telefishanka Iceland.