Receive 10 likes on a problem you have created
Awarded to Dave Bergstein on 16 Aug 2020
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Awarded to Dave Bergstein on 09 Oct 2019
Provide your first answer ever to someone else's question
Awarded to Dave Bergstein on 20 Jul 2017
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Awarded to Dave Bergstein on 18 Nov 2016
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Awarded to Dave Bergstein on 22 May 2015
Like a problem or solution
Awarded to Dave Bergstein on 15 Jul 2014
Create a problem
Awarded to Dave Bergstein on 15 Jul 2014
Solve a problem for the first time
Awarded to Dave Bergstein on 15 Jul 2014
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