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Fischer was also superb at [[speed chess]], and won the first unofficial world [[blitz chess]] title in 1970.<ref>https://www.theguardian.com/sport/2020/nov/06/chess-magnus-carlsen-showboats-his-bullet-skills-with-11-straight-wins</ref>

Fischer was also superb at [[speed chess]], and won the first unofficial world [[blitz chess]] title in 1970.<ref>https://www.theguardian.com/sport/2020/nov/06/chess-magnus-carlsen-showboats-his-bullet-skills-with-11-straight-wins</ref>

He forfeited his title to Soviet Grandmaster Anatoly Karpov in 1975 when he refused to defend his title, unable to agree on any proposed conditions for a match with Karpov. He did not publicly play [[chess]] again until 1992, when he played a return match in [[Yugoslavia]] in violation of American sanctions on Yugoslavia.  

He forfeited his title to Soviet Grandmaster Anatoly Karpov in 1975 when he refused to defend his title, unable to agree on any proposed conditions for a match with Karpov. He did not publicly play [[chess]] again until 1992, when he played a return match in [[Yugoslavia]] in violation of a [[United Nations]] embargo on Yugoslavia.  

Fischer set several records in the 1960s for winning every game in a tournament, which is otherwise unheard of.  He also invented a type of chess clock and created a variation on chess which is very popular today, known as Chess960.

Fischer set several records in the 1960s for winning every game in a tournament, which is otherwise unheard of.  He also invented a type of chess clock and created a variation on chess which is very popular today, known as Chess960.