"I would not know which drug could possibly help a chess player to improve his game," competition manager Yousuf Ahmad Ali said.

"But, yes, there will be official monitors who may demand that players undergo a drugs test after the rounds."

Drug testing is the latest move by the World Chess Federation (FIDE) to raise international standards in the hope of making chess an Olympic [ Images ] sport in the future.

Along with triathlon, chess is making its debut at the Asian Games, where more than 60 players will compete for the medals.

Among them are ex-world champions Rustam Kasimdzhanov of Uzbekistan and Zhu Chen, a former Chinese international who has switched nationality to represent hosts Qatar.

The Asian Games take place from Dec.1-15.