Garry Kasparov (Russian: Га́рри Каспа́ров, is a Russian (formerly Soviet) chess grandmaster, a former World Chess Champion, writer and political activist, considered by many to be the greatest chess player of all time.
Robert James "Bobby" Fischer (March 1943 – January was an American chess Grandmaster and the World Chess Champion. He is widely considered the greatest chess player of all time. Fischer was also a best-selling chess author. (by Philippe Halsman