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* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=74821 An undetected bug for 10 years] by [[Oliver Brausch]], [[CCC]], August 18, 2020 » [[Diagonals#TwoSquares|Two Squares on a Diagonal]]
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75060 Official Release of OliThink 5.7.5 including a Java-GUI] by [[Oliver Brausch]], [[CCC]], September 09, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75670 Ancient olithink fossils] by [[Dann Corbit]], [[CCC]], November 03, 2020
: [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75670&start=1 Re: Ancient olithink fossils] by Ajedrecista, [[CCC]], November 03, 2020
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