1919 to 1939
After the World War I, he won international tournaments at Berlin 1919, 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, Nimzovich and
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.