Obtain 50 solvers for a problem you have created
Awarded to Prof. Joe Hummel on 09 Nov 2014
Be the first to solve a problem
Awarded to Prof. Joe Hummel on 25 Jun 2014
Create a problem
Awarded to Prof. Joe Hummel on 25 Jun 2014
Solve a problem for the first time
Awarded to Prof. Joe Hummel on 23 Mar 2014
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