[5] In 1911, Bogoljubow tied for first place in the Kiev championships, and finished 9–10th in the Saint Petersburg (All-Russian Amateur) Tournament, won by Stepan Levitsky.

[8] In July/August 1914, Bogoljubow played in the Mannheim tournament (the 19th DSB Congress), and tied for 8–9th in that event, which was interrupted by World War I.

[9] After the declaration of war against Russia, eleven "Russian players" (Alekhine, Bogoljubow, Fedor Bogatyrchuk, Alexander Flamberg, N. Koppelman, Boris Maliutin, Ilya Rabinovich, Peter Romanovsky, Peter Petrovich Saburov, Alexey Selezniev, Samuil Weinstein) from the Mannheim tournament were interned by Germany.

In September 1914, four of the internees (Alekhine, Bogatyrchuk, Saburov, and Koppelman) were allowed to return home via Switzerland.

The remaining Russian internees played eight tournaments, the first held in Baden-Baden (1914) and all the others in Triberg im Schwarzwald (1914–1917).

[10] He also won at Breslau (Wrocław) 1925, and in Moscow, ahead of a field which included Emanuel Lasker and José Raúl Capablanca.

[11] Bogoljubow represented Germany at first board in the 4th Chess Olympiad at Prague 1931, winning the individual silver medal (+9−1=7).

[12] In 1930, Bogoljubow twice tied for 2nd–3rd with Nimzowitsch, after Alekhine, in Sanremo; then with Gösta Stoltz, behind Isaac Kashdan, in Stockholm.

[Bogoljubow] did not like the Bolsheviks, but I think only a few people knew that he was treating Hitler's wild ideas with at least equal revulsion and contempt.

[5] During World War II, Bogoljubow lost a match to Euwe (+2−5=3) at Krefeld 1941, and drew a mini-match with Alekhine (+2−2=0) at Warsaw 1943.

In 1941, he took fourth in Munich (the second Europaturnier; Stoltz won), and finished third, behind Alekhine and Paul Felix Schmidt, in Kraków/Warsaw (the 2nd GG-ch).

In 1949, Bogoljubow won in Bad Pyrmont (third West GER-ch), and tied for first–second with Elmārs Zemgalis in Oldenburg.