The winner of the Grand Prix was originally scheduled to play a match in 2010 against the winner of the Chess World Cup 2009, with the winner of that match becoming the challenger for the World Chess Championship 2012. On November 25, 2008, FIDE announced major changes, with the winner and runner-up qualifying instead for an eight-player Candidates Tournament. This caused a number of protests, with Magnus Carlsen and Michael Adams withdrawing, and two other players being replaced. (For details, see World Chess Championship 2012.)