10 birthdays, 2 matches, tournaments and games and 3 deaths from chess history on June 20.

1888138 years ago today
Johannes Zukertort died
German chess master
Card photo: Wikimedia Commons, Public domain, via Wikimedia Commons
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Matches, tournaments and games
- 20102010 Dutch chess championshipEnded · won by Jan Smeets
- 2020Chessable Masters 2020Began · won by Magnus Carlsen
Born on June 20
- 1846I. T. Savenkov
- 1929Gordon CrownBritish chess player
- 1932Boris KatalimovKazakhstani chess player
- 1972Carlos Pereira dos SantosChess player
- 1977Wojciech BartelskiPolish politician
- 1989Nargiz UmudovaAzerbaijani chess player
- 1989Olha KalininaUkrainian chess player
- 1991Guliskhan NakhbayevaKazakhstani chess player
- 1991Arkadiusz LeniartPolish chess player
- 2003Hans NiemannAmerican chess grandmaster
Died on June 20
- 1888Johannes ZukertortGerman chess master
- 1976Ilmari SolinFinnish chess player
- 2025Edwin BhendSwiss chess player and author
Dates from Wikidata (CC0). Photos from Wikimedia Commons, credited on each card. Dates can differ between sources, especially before 1918 when Russia used the old calendar.