In 1996, IBM's Deep Blue faced off against Garry Kasparov, the greatest chess mind on Earth — and changed history.

Russian-born chess grandmaster and émigré Gennadi “Genna” Sosonko still remembers where he was 40 years ago today, when he heard that the 1984-85 World Championship match in Moscow between Garry ...

Kasparov won the rematch later that year, then beat Karpov again in each of the next three World Championships, and is now known as one of the greatest players ever. Perhaps even more crucially though ...