He tied for 3rd-5th at Riga 1899 (the 1st Baltic Congress, Robert Behting won), took 3rd at Riga 1900 (won by T. Muller), won at Riga 1900/01, shared 1st with Karl Wilhelm Rosenkrantz, W. Sohn and Wilhelm von Stamm at Dorpat (Tartu) 1901 (the 2nd Baltic Congress), and tied for 3rd-4th at Reval (Tallinn) 1904 (Bernhard Gregory won).
After World War I, he took 3rd, behind Hermanis Matisons and Fricis Apšenieks, at Riga 1924 (1st LAT-ch). Bētinš played for Latvia in 1st unofficial Chess Olympiad at Paris 1924 (+7 –4 =2), where he took 4th place (team) and tied for 4-7th in Consolation Cup (individual; Karel Hromadka won).
- "Archived copy" (PDF). Archived from the original (PDF) on 2007-07-04. Retrieved 2007-07-04. Name Index to Jeremy Gaige's Chess Tournament Crosstables, An Electronic Edition, Anders Thulin, Malmö, 2004-09-01
- Litmanowicz, Władysław; Giżycki, Jerzy (1987) . Szachy od A do Z. Wydawnictwo Sport i Turystyka Warszawa. ISBN 83-217-2481-7 (1. A-M), ISBN 83-217-2745-X (2. N-Z).
- "Firsts in chess - by Bill Wall (Feb 7, 2005)". Archived from the original on October 28, 2009. Retrieved 2011-10-31.
- OlimpBase :: Chess Olympiad Paris 1924: consolation cup standings
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