Maharashtra youngster Rakesh Kulkarni stunned fifth seed Indian Grandmaster B Adhiban in the opening round of the 11th edition of the Parsvnath Delhi International Chess Festival which got underway today.Top seed Indian Grandmaster Abhijeet Gupta started his campaign in style after defeating International Master B T Murali Krishanan of Railways while second seed Belarusian Grandmaster Aleksej Aleksandrov beat Himal Gusain. Third seed Grandmaster Magesh Chandran defeated Women Grandmaster Soumya Swaminathan and fourth seed Andrei Deviatkin of Russia made short work of Fide Master Sayatan Das. In the B category, all the top-ranked players registered victories without much struggle in the first round.