Chess-Niemann says he will be ‘stone cold killer’ as Carlsen feud resurfaces in documentary
By Julien Pretot PARIS, April 7 (Reuters) - Hans Niemann declares he will become a “stone cold killer” and the world’s best player in a Netflix documentary released on Tuesday about his feud with five-times classical world champion Magnus Carlsen, a pledge that injects new edge into the lingering 
