1 Cazaux, Jean-Louis, and Rich Knowlton. A World of Chess: Its Development and Variations through Centuries and Civilizations. Jefferson, NC: McFarland & Company, Inc., 2017.
2 Gregersen, Eric. "Magnus Carlsen." Britannica. Updated July 21, 2022. Accessed: April 30, 2022.
3 Hanson, Dana. "The 10 Richest Chess Players of All-Time." MoneyInc.com. Accessed: April 30, 2022.
4 History.com Editors. "Deep Blue Defeats Garry Kasparov in Chess Match." History. Updated May 7, 2021. Accessed: April 30, 2022.
5 Markushin, Yury. "40 Facts about Chess Most People Don't Know." The Chess World. November 17, 2011. Accessed: April 30, 2022.
6 The Editors of Encyclopaedia Britannica. "Bobby Fischer." Britannica. Updated March 25, 2022. Accessed: April 30, 2022.
7 Yalom, Marilyn. Birth of the Chess Queen: A History. New York: HarperCollins, 2004.