the match with no technical or physical preparation, while Alekhine got himself into good physical condition and had thoroughly studied Capablanca's play. According to Kasparov, Alekhine's research uncovered many small inaccuracies, which occurred because Capablanca was unwilling to concentrate intensely. Vladimir Kramnik has commented that this was the first contest in which Capablanca had no easy wins. Rematch offered, never finalized Immediately after winning the match, Alekhine announced that he was willing to give Capablanca a return match, on the same terms that Capablanca had required as champion: the challenger must provide a stake of US$10,000, of which more than half would go to the defending champion even if he was defeated. Negotiations dragged on for several years, often breaking down when agreement seemed in sight. Their relationship became bitter, and Alekhine demanded much higher appearance fees for tournaments in which Capablanca also played. The rematch never took place. After Capablanca's death in 1942, Alekhine wrote that Capablanca's demand for a $10,000 stake had been an attempt to avoid challenges. Grandmaster Robert Byrne wrote that Alekhine consciously sought lesser opponents for his subsequent championship matches, rather than give Capablanca another chance. Defeats Bogoljubov twice in title matches Although he never agreed terms for a rematch against Capablanca, Alekhine played two world title matches with Efim Bogoljubov, in 1929 and 1934, winning handily both times. The first was held at Wiesbaden, Heidelberg, Berlin, The Hague, and Amsterdam from September through November 1929. Alekhine retained his title, scoring +11−5=9. From April to June 1934, Alekhine faced Bogoljubov again in a title match held in twelve German cities, defeating him by five games (+8−3=15). In 1929, Bogoljubov was forty years old and perhaps already past his peak. Anti-Bolshevik statements, controversy After the world championship match, Alekhine returned to Paris and spoke against Bolshevism. Afterwards, Nikolai Krylenko, president of the Soviet Chess Federation, published an official memorandum stating that Alekhine should be regarded as an enemy of the Soviets. The Soviet Chess Federation broke all contact with Alekhine until the end of the 1930s. His elder brother Alexei, with whom Alexander Alekhine had a very close relationship, publicly repudiated him and his anti-Soviet utterances shortly afterward, but Alexei may have had little choice about this decision. Early 1930s According to Reuben Fine, Alekhine dominated chess into the mid-1930s. His most famous tournament victories were at the San Remo 1930 chess tournament (+13=2, 3½ points