After beating Tatiana Kosintseva in the first game the Indian ace lost to the Russian in the second in the World women's chass championship.
The defending champion scored an easy victory over Tian Tian of China in the fourth round of the tournament.
The top seeded Indian GM settled for a short draw with Wang Yu of China in the sixth round of the 19th World junior girls' chess championship.
Indian eves came up with yet another emphatic performance in the 10th round of the women's section of the 36th Chess Olympiad.
The top seeded Indian GM easily beat Ekaterina Ubiennykh of Russia in the 11th round and joined Zhao Xue of China and Nadezhda Kosintseva at the top in the World juniors girls' chess championship.
WGM Zhao Xue of China emerged sole leader after the seventh round in the World junior chess championships.
The defending champion was held by seventh seed Zhao Xue of China in the World Junior chess championships.