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Re:Chess’s Cheating Crisis by hinkley on Monday October 19, 2020 @01:00PM (#24828313)
In professional cycling they do two blood draws for any competition. The first one they test now for any known substances, practices (transfusions are illegal, without a medical reason). The second one they save to re-test when new drugs come to light. A few notable professionals have had titles stripped for violations that were detected years after the event.

Re-running the games (especially to check for new techniques that aren't public at the time of the event) would be in the same spirit.

Re:Chess’s Cheating Crisis by oh_sigh on Monday October 19, 2020 @01:13PM (#24828471)
I think it's important to note that the second blood draw is to detect drugs which are currently banned, but not known how to test for.
Re:Chess’s Cheating Crisis by hinkley on Monday October 19, 2020 @01:35PM (#24828701)
Err, yes. In the case of chess, all computer assistance is always banned, but some algorithms may not match current patterns of behavior.

In the case of blood tests, there is a cat and mouse game of changing how the drugs are administered or other chemicals in the blood that reduce the effectiveness of the tests. Later on the presence of those other substances may be used as motivation for re-testing a group of people.