The brother-sister Indian duo of R Praggnanandhaa and R Vaishali suffered defeats in their respective section while Magnus Carlsen justified his top billing with a win over an off-colour Ding Liren to surge to sole lead on 12 points in the Norway Chess tournament here.

Pragganandhaa lost to Firouzja Alireza of France in the Armageddon tiebreaker after suffering a bit through the Classical game too while Vaishali went down to world women’s champion Wenjun Ju of China who outplayed the Indian in the endgame.