 Complete the following phrase:  Up to and including the 1894 SteinitzLasker 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 