Arinbjörn Guðmundsson learned to play chess late at the age of seventeen. However, he achieved good results in chess tournaments and was one of Icelandic leading chess players from 1955 to 1970. In 1954, together with Friðrik Ólafsson and other Icelandic chess players, Arinbjörn Guðmundsson founded the first chess magazine in the country.[1] He has regularly participated in Icelandic Chess Championships and Reykjavík International Chess tournaments (1955, 1957, 1960, 1964).
In the 1960, in Reykjavík International Chess Tournament[3] Arinbjörn Guðmundsson has played a tactically challenging party against the next World Chess Champion Bobby Fischer.[4] In 1969, Fisher included this party in his book My 60 Memorable Games.[5]
In 1970 Arinbjörn Guðmundsson moved to Australia with his family. He settled in Brisbane, where he also spent the rest of his life. In 1971 Arinbjörn Guðmundsson participated in the Australian Chess Championship.[6] After that, he was rarely played chess, except socially at the Logan City Chess Club. Arinbjörn Guðmundsson died in the summer of 2014.