Vietnam's second best chess player Nguyen Ngoc Truong Son lost a tie-break to Russian champion Peter Svidler at the second round of World Cup 2011 in Khanty-Mansiysk, Russia on Friday.
After their draws in their second round's first and second leg on Wednesday and Thursday, the 106th-ranked Vietnamese managed to hold the 16th-ranked Russia again in two fast games of 25 minutes each.
The 21-year-old Son only lost to the 35-year-old Peter Svidler in their two lightning games of 10 minutes each.
Meanwhile, Vietnam's No.1 player Le Quang Liem has advanced to the third round of the fourth World Cup being held from August 28th till September 20th.
The 20-year-old Liem, ranked 25th in the world, will next clash with the 29-year-old Cuban Lazaro Bruzon Batista, ranked 62nd.
The 2000 World Junior Chess Champion, Batista put on a sterling performance in their second round tie-break on Friday and beat 29-year-old Spaniard Francisco Pons Vallejo, ranked 28th in the world.
However, Liem defeated Lararo Batista twice at the 46th Capablanca Chess Memorial in Havana in May, 2011 where he finished second behind Ivanchuk Vassily, currently ranked 7th in the world.