Magnus Carlsen is not unbeatable: 18-yr-old chess Grandmaster Praggnanandhaa

Chess Grandmaster R Praggnanandhaa, who was defeated by five-time world chess champion Magnus Carlsen in the World Cup recently, said Carlsen is "far from invincible". "It's not like he (Carlsen) is invincible. He's definitely strong. But, he does lose games," said Praggnanandhaa. The 18-year-old has become the youngest-ever finalist of the Chess World Cup.