Johannes Türn was Estonian champion in 1925, 1941 and 1944 (=August Eller).
Türn played in numerous Estonian championships. In 1923, he took second, behind Paul Rinne, in Tallinn (1st EST-ch). In 1925, Türn won in Tallinn (2nd EST-ch). In 1930, he took second, behind Vladas Mikenas (3rd EST-ch). In 1932, Türn tied for third with Gunnar Friedemann, behind Leho Laurine, and Rinne (4th EST-ch). In 1937, he took 3rd, behind Paul Schmidt, and Ilmar Raud (9th EST-ch).
In August/September 1936, Türn played on fourth board in the unofficial Chess Olympiad in Munich (+8 –4 =7). In July/August 1937, he played on fourth board at the 7th Chess Olympiad in Stockholm (+1 –6 =4). In August/September 1939, Türn played as first reserve at the 8th Chess Olympiad in Buenos Aires (+3 –3 =4), as the Estonian team won the bronze medal.
During World War II, Türn played in the Estonian championships, although the country was occupied by either the Soviet Union or Germany. In 1941, he tied for first with Feliks Kibbermann in Tallinn (11th EST-ch), but took the title after a play-off match (+3 –0 =1). In 1942, Türn took second, behind Paul Keres, in Tallinn (12th EST-ch). In 1944, he tied for first with August Eller in Viljandi (14th EST-ch).
Türn also played draughts, in 1950 sharing the Estonian championship with Ülo Kesker.
Wikipedia article: Johannes Türn