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==2020 ...==
* [https://www.talkchess.com/forum3/viewtopic.php?f=7&t=78464 Open Chess Game Database Standard (OCGDB)] by [[Pham Hong Nguyen|Nguyen Pham]], [[CCC]], October 20, 2021
* [https://www.talkchess.com/forum3/viewtopic.php?f=2&t=79250 handling huge pgn databases] by Jonathan Cremers, [[CCC]], January 31, 2022
=External Links=
