Australian Federal Police say the 2.3-tonne seizure has a street value of $494m.
As the threat from plastic pollution mounts, countries could only agree to postpone negotiations to a later date.
Teen challenger Gukesh Dommaraju of India holds reigning champ Ding Liren after first week of competition.
Beijing lodges ‘serious protests’ with the US saying it ‘strongly condemns’ Taiwanese leader’s stopover in Hawaii, Guam.