Korea JoongAng Daily on MSN

Korean mathematician solves decades-old 'moving sofa problem'

A 31-year-old Korean mathematician solved one of the oldest math puzzles and was recognized as one of Scientific American’s ...
The Chosun Ilbo on MSN

Korean researcher solves 60-year moving sofa problem, top math innovation

A Korean researcher who solved the “Moving Sofa Problem,” a mathematical challenge that had puzzled mathematicians for nearly ...