 | Fischer, Johannes (14 April 2019). "Efim Bogoljubov: A Chess Career". ChessBase. Retrieved 20 December 2022. Efim Bogoljubov, Chess Federation of Russia "CTC... 14 KB (1,448 words) - 22:35, 22 April 2024 |
 | progress. Meanwhile, Alekhine defended his title with ease against Efim Bogoljubov in 1929 and 1934. He was defeated by Max Euwe in 1935, but regained... 121 KB (10,566 words) - 00:07, 27 January 2024 |
 | bishops on opposite colors if one side has weak pawns. In the 1925 game Efim Bogoljubov–Max Blümich (see diagram), White wins because of the bishops being... 24 KB (2,783 words) - 18:42, 28 April 2024 |
| In 1929, a World Chess Championship was played between challenger Efim Bogoljubow and titleholder Alexander Alekhine. The match was held in Wiesbaden,... 4 KB (177 words) - 12:33, 15 January 2024 |
 | Genocide Survivors. Retrieved 9 March 2015. "Alexander Alekhine vs Efim Bogoljubov, Bad Pistyan, 1922". chessgames.com. Stefan, Zweig. "Schachnovelle"... 14 KB (1,499 words) - 17:45, 21 February 2024 |
 | the Grandmasters. Richard Réti vs Aron Nimzowitsch, Berlin 1928, 0–1 Efim Bogoljubov vs Aron Nimzowitsch, San Remo 1930, 0–1 List of chess games List of... 19 KB (2,329 words) - 07:12, 23 April 2024 |
Aron Nimzowitsch, Richard Réti, Savielly Tartakower, Gyula Breyer, Efim Bogoljubov, and Ernst Grünfeld, who all came from Central Europe. They felt that... 7 KB (779 words) - 12:14, 20 July 2023 |
name include: Efim Alexandrov (born 1960), Russian-Jewish comedian Efim Bogoljubov (1889–1962), Russian-German chess grandmaster Efim Dzigan (1898–1981)... 2 KB (229 words) - 15:39, 3 February 2024 |
was tried by some hypermodern players such as Aron Nimzowitsch and Efim Bogoljubov, but it has never become very popular. The move 1...Nc6 is a fairly... 6 KB (725 words) - 02:55, 23 June 2023 |
the centre. This variation was debuted by Alexander Alekhine against Efim Bogoljubov in 1929. White can try to establish a strong pawn centre with 3.e4... 12 KB (1,647 words) - 22:44, 20 April 2024 |