prompt: Summarize the details of the lawsuit from the following text using 4-6 sentences.
  
  Tim Vizer/AFP via Getty Images
  Hans Niemann is launching a counterattack in his dispute with chess world champion Magnus Carlsen, filing a federal lawsuit that accuses Carlsen of maliciously colluding with others to defame the 19-year-old grandmaster and ruin his career.
  
  It's the latest move in a scandal that has injected unprecedented levels of drama into the world of elite chess since early September, when Carlsen suggested Niemann's upset victory over him at the Sinquefield Cup tournament in St. Louis was the result of cheating.
  
  Niemann wants a federal court in Missouri's eastern district to award him at least $100 million in damages. Defendants in the lawsuit include Carlsen, his company Play Magnus Group, the online platform Chess.com and its leader, Danny Rensch, along with grandmaster Hikaru Nakamura.
  
  Chess world champion Magnus Carlsen accuses Hans Niemann of cheating
  SPORTS
  Chess world champion Magnus Carlsen accuses Hans Niemann of cheating
  Hans Niemann is accused of cheating in more than 100 chess games. He's playing today
  SPORTS
  Hans Niemann is accused of cheating in more than 100 chess games. He's playing today
  The lawsuit says that in the aftermath of Niemann's upset win in September, Carlsen has been motivated to preserve his status as the "king of chess" so he could complete his company's buyout by Chess.com — a deal worth tens of millions of dollars.
  
  The court filing accuses Rensch and Nakamura of using their influence to amplify and bolster Carlsen's claims that Niemann is a cheater. The suit seeking a jury trial was filed on Thursday, one day after Niemann finished the U.S. Chess Championship tournament in a five-way tie for fifth place.
chosen.role: system
chosen.content: A chat.
chosen.role: user
chosen.content: Summarize the details of the lawsuit from the following text using 4-6 sentences.
  
  Tim Vizer/AFP via Getty Images
  Hans Niemann is launching a counterattack in his dispute with chess world champion Magnus Carlsen, filing a federal lawsuit that accuses Carlsen of maliciously colluding with others to defame the 19-year-old grandmaster and ruin his career.
  
  It's the latest move in a scandal that has injected unprecedented levels of drama into the world of elite chess since early September, when Carlsen suggested Niemann's upset victory over him at the Sinquefield Cup tournament in St. Louis was the result of cheating.
  
  Niemann wants a federal court in Missouri's eastern district to award him at least $100 million in damages. Defendants in the lawsuit include Carlsen, his company Play Magnus Group, the online platform Chess.com and its leader, Danny Rensch, along with grandmaster Hikaru Nakamura.
  
  Chess world champion Magnus Carlsen accuses Hans Niemann of cheating
  SPORTS
  Chess world champion Magnus Carlsen accuses Hans Niemann of cheating
  Hans Niemann is accused of cheating in more than 100 chess games. He's playing today
  SPORTS
  Hans Niemann is accused of cheating in more than 100 chess games. He's playing today
  The lawsuit says that in the aftermath of Niemann's upset win in September, Carlsen has been motivated to preserve his status as the "king of chess" so he could complete his company's buyout by Chess.com — a deal worth tens of millions of dollars.
  
  The court filing accuses Rensch and Nakamura of using their influence to amplify and bolster Carlsen's claims that Niemann is a cheater. The suit seeking a jury trial was filed on Thursday, one day after Niemann finished the U.S. Chess Championship tournament in a five-way tie for fifth place.
chosen.role: assistant
chosen.content: Chess Grandmaster Hans Niemann is suing chess world champion Magnus Carlson and his company, Play Magnus Group, for defamation. Niemann claims that Carlsen colluded with Danny Rensch, the leader of Chess.com, and Hikaru Nakamura, a chess grandmaster, to ruin Niemann's career. Carlsen suggested that Niemann cheated in their match at the Sinquefield Cup after being defeated. The court filing accuses Rensch and Nakamure of amplifying the cheating claim; Niemann is asking for at least $100 million in damages. 
rejected.role: system
rejected.content: A chat.
rejected.role: user
rejected.content: Summarize the details of the lawsuit from the following text using 4-6 sentences.
  
  Tim Vizer/AFP via Getty Images
  Hans Niemann is launching a counterattack in his dispute with chess world champion Magnus Carlsen, filing a federal lawsuit that accuses Carlsen of maliciously colluding with others to defame the 19-year-old grandmaster and ruin his career.
  
  It's the latest move in a scandal that has injected unprecedented levels of drama into the world of elite chess since early September, when Carlsen suggested Niemann's upset victory over him at the Sinquefield Cup tournament in St. Louis was the result of cheating.
  
  Niemann wants a federal court in Missouri's eastern district to award him at least $100 million in damages. Defendants in the lawsuit include Carlsen, his company Play Magnus Group, the online platform Chess.com and its leader, Danny Rensch, along with grandmaster Hikaru Nakamura.
  
  Chess world champion Magnus Carlsen accuses Hans Niemann of cheating
  SPORTS
  Chess world champion Magnus Carlsen accuses Hans Niemann of cheating
  Hans Niemann is accused of cheating in more than 100 chess games. He's playing today
  SPORTS
  Hans Niemann is accused of cheating in more than 100 chess games. He's playing today
  The lawsuit says that in the aftermath of Niemann's upset win in September, Carlsen has been motivated to preserve his status as the "king of chess" so he could complete his company's buyout by Chess.com — a deal worth tens of millions of dollars.
  
  The court filing accuses Rensch and Nakamura of using their influence to amplify and bolster Carlsen's claims that Niemann is a cheater. The suit seeking a jury trial was filed on Thursday, one day after Niemann finished the U.S. Chess Championship tournament in a five-way tie for fifth place.
rejected.role: assistant