World chess champion Magnus Carlsen said on Monday he believed Hans Niemann had "cheated more — and more recently — than he has publicly admitted", adding he no longer wanted to play against the American and any rivals who repeatedly cheated in the past.
The 31-year-old Norwegian resigned at the Julius Baer Generation Cup last week after one move against Niemann, who lags him by almost 200 Elo points — the rating system used to calculate the relative skill levels of players.
