article: Efim Bogolyubov
links: Alexander Alekhine USSR Kiel Lüneburg World Chess Championship World War I Oldenburg Augsburg Grandmaster (chess) Max Euwe Warsaw Saarbrücken Kassel Chess Olympiad Ukrainians Berlin World War II Prague FIDE Nimzovich Emanuel Lasker Wroclaw Krefeld Moscow José Raúl Capablanca Bad Kissingen Nazi Akiba Rubinstein Stockholm Germany Karlovy Vary