Alekhine vs Bogoljubov - Mikhaïl Botvinnik - Bog

The 1929 World Chess Championship was played between challenger Efim Bogoljubow and titleholder Alexander Alekhine. The match was held in Wiesbaden, Heidelberg and Berlin in Germany, and The Hague and Amsterdam in the Netherlands from September 6 to November 12. Alekhine retained his title.The match began September 6, 1929 under the following conditions: Alekhine would get $6,000 dollars win or lose, with any surplus going to Bogoljubov. A winner would be declared if he scored 151/2 points with 6 wins from a maximum of 30 games. Unlike the Capablanca-Alekhine 1927 match, which had been played in private, the Alekhine-Bogoljubov match would be played in public. The organizers insisted on this, in order to raise money from ticket sales. Only those cities that contributed to the purse would be allowed to host the match: Wiesbaden (games 1-8; 24-25), Heidelberg (games 9-11), Berlin (games 12-17), The Hague (games 18-19; 23), Rotterdam (game 20), and Amsterdam (games 21-22). Emanuel Lasker served as arbiter in the Berlin games