International Master G Akash, a former national champion, shared the lead with four points after the fourth round of the 11th Chennai Open International Grand Master chess tournament in Chennai today. 

In the fourth round, Akash defeated Grand Master Raset Ziatdinov of USA in a Ruy Lopez game that lasted 46 moves.
     

On the top board, GM Luka Paichadze of Georgia scored a win over defending champion R R Laxman of India.