José Raúl Capablanca was a Cuban chess grandmaster, widely regarded as one of the greatest players in history, known for his exceptional endgame skill and positional play.
Viktor Korchnoi was a Soviet and Swiss chess grandmaster, widely regarded as one of the strongest players never to win the World Championship.
Mikhail Botvinnik was a Russian Soviet chess grandmaster and World Champion, renowned for his strategic brilliance and contributions to modern chess theory.
Alexander Alekhine was a renowned Russian-French chess grandmaster, the fourth World Chess Champion, and a prolific chess writer.