Be the first to solve a problem
Awarded to Konrad on 22 Feb 2013
Create a problem
Awarded to Konrad on 22 Feb 2013
Comment on a problem or solution
Awarded to Konrad on 07 Dec 2012
Like a problem or solution
Awarded to Konrad on 29 Nov 2012
Solve all the problems in Tiles Challenge
Awarded to Konrad on 28 Nov 2012
Solve a problem for the first time
Awarded to Konrad on 09 Nov 2012
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