FIDE found itself embroiled in some controversies relating to the American player Bobby Fischer, the first of which took place when Fischer alleged that at the 1962 Candidates Tournament in Curaçao, the Soviet players Tigran Petrosian, Paul Keres and Efim Geller had pre-arranged draws in their games played amongst themselves, and that Viktor Korchnoi, another Soviet player, had been instructed to lose to them (Fischer had placed 4th, well behind Petrosian, Keres and Geller). Grandmaster Yuri Averbakh, a member of the Soviet delegation at the tournament, said in 2002 that Petrosian, Keres and Geller privately agreed to draw their games, and a statistical analysis in 2006 supported this conclusion. FIDE responded by changing the format of Candidates Tournaments from a multi-round round-robin to a series of elimination matches, initially 10–12 games in duration, though by the 1970s, the Candidates final would be as long as 24 games.