1919 to 1939
World War I, he won international tournaments at
Stockholm 1919, Stockholm 1920,
Kiel 1921, and
Pistyan (Pieštany) 1922. He tied for 1st–3rd at Karlsbad (
Karlovy Vary) 1923.
In 1924 Bogoljubow briefly returned to Russia, which had since become the Soviet Union, and won consecutive
USSR championships in 1924 and 1925.
 He also won at Breslau (
Wroclaw) 1925, and in
Moscow 1925, ahead of a field which included
Emanuel Lasker and
José Raúl Capablanca.
In 1926, he emigrated to Germany. He won, ahead of
Akiba Rubinstein that year at Berlin. At
Bad Kissingen 1928, he triumphed (+6 –1 =4) over a field which included Capablanca,
Savielly Tartakower. Bogoljubov won two matches against
Max Euwe (both 5.5–4.5) in 1928 and 1928/29 in Holland. He played matches for the
World Chess Championship twice against Alekhine, losing 15.5–9.5 in 1929, and 15.5–10.5 in 1934.
He represented Germany at first board in the 4th
Chess Olympiad at
Prague 1931, winning the individual silver medal (+9 –1 =7).
 Bogoljubov continued to have good tournament results throughout the 1930s.