Rubuta ci gaba don wannan sakin layi - Nielsen ya horar da Gwarzon Duniya Viswanathan Anand daga 2002 zuwa 2012. Anand ya lashe taken Gasar Cin Kofin Duniya a Mexico 2007, kuma ya kare shi a Bonn 2008, Sofia 2010 da Moscow 2012
Ka yi haƙuri.