Earned on 18 Aug 2012 for solving Problem 1. Times 2 - START HERE.
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Earned on 19 Aug 2012 for liking Solution 109418.
Earned on 2 Sep 2012 for creating Problem 929. Rearrange coefficients after block based DCT tr....
Solve a problem first.
Earned on 21 Sep 2014 for solving all the problems in CUP Challenge.
Solve a problem with a best solution.
Must have 50 solvers for a problem you created.
Earned on 6 May 2014 for solving all the problems in Tiles Challenge.
Earned on 12 Mar 2014 for solving all the problems in ASEE Challenge.
Solve all the problems in Cody Challenge problem group.
Create 10 problems.
Solve 500 problems.
Solve all the problems in Modeling and Simulation Challenge problem group.
Solve all the problems in Magic Numbers problem group.
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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