Viet Nam's top chess player Le Quang Liem lost to Ray Robson of the US in the sixth round of the Aeroflot Open on Sunday in Moscow, Russia.
The 21-year-old launched a strong initial offensive but the American, who has an Elo rating of 2,596 resisted the attack to eventually take the match in 44 moves. Following the defeat, Liem, who has an Elo rating of 2,714, falls to 66th in the world rankings.
Liem, the defending champion, has just 2.5 points, 2.5 points behind tournament leader Anton Korobov of Ukraine.
He will next play Daniel Alsina Leal of Spain.-VNS