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Earned on 12 Feb 2012 for solving Problem 1. Times 2 - START HERE.
Earned on 30 Mar 2015 for commenting on Solution 608494.
Earned on 4 Feb 2014 for liking Solution 104277.
Earned on 7 Sep 2015 for creating Problem 42588. Derivative function.
Earned on 24 Apr 2015 for first solving Problem 42255. Volume of Cylinder.
Earned on 12 Aug 2015 for solving all the problems in CUP Challenge.
Earned on 6 Jun 2014 for submitting the best solution Solution 147896.
Must have 50 solvers for a problem you created.
Earned on 12 Aug 2015 for solving all the problems in Tiles Challenge.
Earned on 18 Aug 2015 for solving all the problems in ASEE Challenge.
Solve all the problems in Cody Challenge problem group.
Create 10 problems.
Earned on 20 Aug 2015 for solving 500 problems.
Earned on 14 Aug 2015 for solving all the problems in Modeling and Simulation Challenge.
Earned on 20 Aug 2015 for solving all the problems in Magic Numbers.
Must receive 25 total likes for the problems you created.
Must receive 50 total likes for the solutions you submitted.
Must receive 10 likes for a solution you submitted.
Must receive 10 likes for a problem you created.
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