On May 4, 1997 Garry Kasparov lost the second batch of chess to IBM Deep Blue computer. The first match between the grandmaster and the supercomputer took place a year earlier, on February 10, 1996 in Philadelphia, and then Kasparov won with a score of 4-2.

The bout of 1997 was officially registered as the first case of the victory of the chess computer over the grandmaster. Since then, two decades have passed, and in 2016 the computer beat a man in Go, a game more complex than chess, in terms of logic, ferra.ru  reports.