After the breakdown of his attempt to negotiate a title match in 1911, Capablanca drafted rules for the conduct of future challenges, which were agreed by the other top players at the 1914 Saint Petersburg tournament, including Lasker, and approved at the Mannheim Congress later that year. The main points were: the champion must be prepared to defend his title once a year; the match should be won by the first player to win six or eight games, whichever the champion preferred; and the stake should be at least £1,000 (worth about £347,000 or $700,000 in 2006 terms).