Frenchman scored at Norway Chess despite his heavily protected sprained ankle, and defeated Carlsen for the first time in a classical game

Magnus Carlsen has won the annual Norway Chess elite tournament for six of the past seven years. However, the 35-year-old world No 1 was shocked in Monday’s opening round by Alireza Firouzja, who had finished last at Bucharest the previous week in the Grand Chess Tour event won by Germany’s Vincent Keymer.

The Frenchman, 22, defeated Carlsen for the first time in classical chess despite playing with a sprained ankle, caused by falling off a stage at Bucharest. It was the most high-profile success by a physically injured grandmaster since Tilburg 1985, where England’s Tony Miles shared first prize playing prone from a massage table after injuring his back.