) (1908–1967) was a Swedish chess grandmaster
. He came to fame when he won matches against star players Rudolf Spielmann
and Aron Nimzowitsch
in 1935. Stahlberg won the Swedish Chess Championship
of 1927 and became Scandinavian champion
in 1929. Following the Chess Olympics in Buenos Aires 1939, he stayed in Latin America until 1948, where he won many tournaments, some of them in competition with Miguel Najdorf
. In 1950 and 1953 he participated in the World Championship
Candidates Tournaments and umpired in the World Championships between 1957 and the 1963 Botvinnik
World Championship match. In 1967 he travelled to Leningrad
to take part in an international tournament but died before playing his first game.
Ståhlberg published several chess books, some of them originally in Swedish.
- I kamp med världseliten (In Battle against the World Elite, 1948, 1958);
- Schack och schackmästare (Chess and Chess Masters, 1937,1959);
- Strövtåg i schackvärlden (Excursions in the World of Chess).