After Magnus - who can dethrone the World chess ChampionWho Can Dethrone the World Chess Champion? Magnus Carlsen has said that he may stay at the top for another 20 years. And who can argue with the World Champion? He's been dominating top level chess with an iron fist and has rightly highlighted the lack of consistency from his potential rivals. When Bobby Fischer, Garry Kasparov and Magnus Carlsen burst onto the chess scene, there was no doubt whatsoever about their future destiny: sooner or later they