Up to and including the 1894 Steinitz–Lasker match, both players, with their backers, generally contributed equally to the purse, following the custom of important matches in the 19th century before there was a generally recognized world champion. For example: the stakes were £100 a side in both the second Staunton vs Saint-Amant match (Paris, 1843) and the Anderssen vs Steinitz match (London, 1866); Steinitz and Zukertort played their 1886 match for £400 a side. Lasker introduced the practice of demanding that the challenger should provide the whole of the purse, and his successors followed his example up to World War II. This requirement makes arranging world championship matches more difficult, for example: Marshall challenged Lasker in 1904 but could not raise the money until 1907; in 1911 Lasker and Rubinstein agreed in principle to a world championship match, but this was never played as Rubinstein could not raise the money. In the early 1920s, Alekhine, Rubinstein and Nimzowitsch all challenged Capablanca, but only Alekhine was able to raise the US$10,000 that Capablanca demanded, and not until 1927.