Gedeon Barcza grew up in Debrecen and holds a degree in mathematics. He initially worked as a teacher of mathematics and physics at a middle school in 1951 he worked as a chess journalist.
In OTB chess, he won 1942-1966 eight times the national championship of Hungary. He also represented his country from 1952 to 1968 in seven Chess Olympiads, where he in 1954 on the third board a gold medal, and in 1956 the team won a bronze medal. 1952 and 1962 he played in the Interzonal. In 1950 he was of the FIDE for International Master, 1954, appointed Grand Master.
His best historical Elo rating of 2683, he reached in December 1951.
In the long- Chess Olympiads 1937/39 and 1947/52, he contributed greatly to the victory of the Hungarian team. 1941/42, he was Hungarian champion.
Barcza also worked as a chess journalist and author. He was sakkélet from 1951 editor of the leading Hungarian chess magazine Magyar and published in 1959 (together with László Alföldy and Jenő Kapu ) a history of world chess champion, who also appeared in German translation in 1975.
Barcza was known for his positional style. The preferred construction of the opening it, which was characterized by the features 1.Nf3, 2.g3 3.Lg2 and was designated Barcza system.