|Full name||Klaus Viktor Darga|
|Born||24 February 1934 (age 89)|
|FIDE rating||2453 (December 2023) [inactive]|
|Peak rating||2540 (July 1971)|
In 1951, Darga became German Junior Champion after winning the national under-20 championship. He also proved his strength as a young chess player by sharing first place in the World Junior Championship of 1953, with Oscar Panno of Argentina who was awarded the title on tiebreak. He won the West German Chess Championship in 1955 and 1961. He came second in the Gijón international tournament in 1956.His best performance is held to be the 1967 Winnipeg tournament, where he also tied for first place with Bent Larsen, whom he beat, ahead of joint Boris Spassky and Paul Keres.
He was awarded the title of International Master in 1957, and Grandmaster in 1964. He played for West Germany in ten Olympiads between 1954 and 1978, and also served as coach of the German national team. He was second reserve for the World team in the 1970 Match of the Century between the Soviet Union and the rest of the world, but did not play any games in the match.
After his retirement as a chess professional, Darga became a computer programmer for IBM.
- Fischer, Johannes (24 February 2014). "Klaus Darga wird 80" (in German). ChessBase.
- Pedro Méndez Castedo and Luis Méndez Castedo (2019). The Gijón International Chess Tournaments, 1944-1965. McFarland. pp. pags. 171-188.
- Edward R. Brace (1977), An Illustrated Dictionary of Chess, London: Hamlyn Publishing.