Mumbai, Aug. 23 -- FM Jaiveer Mahendru emerged the sole leader of the Asian Junior Open Classical Chess Championship after a stunning victory over IM Aaditya Dhingra in Round 4. Jaiveer, rated 2326, upset the higher-rated Dhingra (2403) to maintain a perfect score of 4/4. He is now half a point ahead of a strong group of players comprising top seed IM Mayank Chakraborty of India, IM Artem Pingin of Russia, FM Amanmuhammet Hommadov of Turkmenistan and FM Sharnarthi Viresh of India. The Girls Championship also witnessed an exciting fourth round with top seed WFM Pratitee Bordoloi of India defeating Shivamshika G to maintain her perfect score of 4/4....