New Delhi:Grandmaster Neelotpal Das was on Wednesday outwitted by promising Chennai youngster V Haribalu in the fourth round of the Parsvnath International Open Chess Championships in New Delhi. Das, who played black, was shocked by the 19-year-old, who has a reputation of being a giant-killer, in quick time at the Indira Gandhi Indoor Stadium. After four rounds, as many as eight players were sharing top spot with a perfect score of four points. Among them were five GMs, including three Indians - Abhijit Kunte, Deepan Chakravarthy and Dibyendu Barua. Iuldachev Saidali and Safin Sukhrat of Uzbekistan were the other two GMs in lead, besides International Masters Abhijeet Gupta, S Arun Prasad and Arghyadip Das. The leaders were being followed by 18 players, including tops seeds Alexei Dreev and Surya Shekhar Ganguly, with 3.5 points apiece. Ganguly, with white, played Ruy Lopez against N Sudhakar Babu, who had held Dreev to a draw yesterday. Four-time national champion Ganguly said he had to battle harder against the elements than his opponent as low temperature in the hall made it difficult for him to concentrate on the game. He had an unclear position after a few moves but was able to bring Sudhakar Babu under time pressure. "I had 24 minutes on my clock and he had only one minute left. I had a clear win but due to the cold I was not able to think of any moves," said Ganguly, who was suffering from fever.