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Awarded to Kevin Krüger on 15 Apr 2020
Provide your first answer ever to someone else's question
Awarded to Kevin Krüger on 06 Sep 2017
15-year anniversary Scavenger Hunt finisher badge
Awarded to Kevin Krüger on 09 Nov 2016
Solve all the problems in Tiles Challenge
Awarded to Kevin Krüger on 06 Oct 2016
Be the first to solve a problem
Awarded to Kevin Krüger on 09 Sep 2016
Solve all the problems in CUP Challenge
Awarded to Kevin Krüger on 09 Sep 2016
Like a problem or solution
Awarded to Kevin Krüger on 28 Jan 2015
Solve a problem for the first time
Awarded to Kevin Krüger on 28 Jan 2015
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