Chess: Carlsen comes to town with tantalising tests for London Classic Super Rapid

The Norwegian world No 1 will be among 500 competitors in the 10-round contest of 15-minute games Magnus Carlsen makes a very rare appearance in an open tournament on 5-6 December when the Norwegian, who has topped the world rankings for 15 successive years, competes in the 10-round Super Rapid at the XTX Markets Londo