World Chess Champion Magnus Carlsen blundered and lost to chess maverick Anton Korobov in Round 4 of the FIDE Online Steinitz Memorial but still finished the day in sole first place on 4/6. He ground down Le Quang Liem in trademark style and crushed Shakhriyar Mameydarov and David Anton, though living up to his word and playing 1.c3 against Peter Svidler almost ended in disaster! Bu Xiangzhi, Daniil Dubov and Shakhriyar Mamedyarov are just half a point behind after a topsy-turvy day.
You can replay all the Steinitz Memorial open section games below (click on a result to open the game with computer analysis):
