Last month, eight of the world’s top chess players were isolated in Ekaterinburg, competing for the right to play a title match against the world champion, Magnus Carlsen, in Dubai in November. On 26 March, the Russian government announced that international flights would cease the next day. The organisers, who had already faced complaints over the decision to hold the tournament (one competitor had withdrawn), halted proceedings so the players could get home safely. A week later, Carlsen arranged an online tournament for eight players with $250,000 up for grabs (first prize $70,000, second place $45,000). It started on Saturday, 18 April. Nothing of this order has been tried before. Chess has been slow to capitalise on the vogue for e-sports and streaming culture, as sponsors have been put off by the possibilities for computer assistance and disconnection controversies.