The best chess player in human history, Bobby Fischer.

Bobby Fischer's 21-move brilliancy

Bobby Fischer creates a chess masterpiece in only 21 moves against Robert Eugene Byrne, an International Master, at the 1963/1964 United States Chess Championship, held in New York. At 20 years young, Grandmaster Robert James Fischer was already among the world's very best chess players. In this brilliancy, Fischer demonstrates how to inject multiple imbalances into a highly symmetrical position, how to properly highlight these differences to benefit oneself, and how to accurately assess the true value of the pieces as they rest on the board.

Wikipedia - Bobby Fischer

Robert James Fischer (March 9, 1943 – January 17, 2008) was an American chess grandmaster and the eleventh World Chess Champion. Many consider him to be the greatest chess player of all time.