Earned on 16 Mar 2012 for solving Problem 1. Times 2 - START HERE.
Earned on 25 Sep 2013 for liking Solution 84171.
Earned on 15 May 2013 for commenting on Solution 207518.
Earned on 13 May 2014 for creating Problem 2318. Combine Cards to make 21.
Solve a problem first.
Earned on 2 Jun 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.
Solve all the problems in Tiles Challenge problem group.
Solve all the problems in ASEE Challenge problem group.
Solve all the problems in Cody Challenge problem group.
Create 10 problems.
Solve 500 problems.
Earned on 30 Jul 2015 for solving all the problems in Modeling & Simulation Challenge.
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.
Solve all the problems in Indexing I problem group.
Must receive 10 likes for a solution you submitted.
Must receive 10 likes for a problem you created.
Solve all the problems in Indexing II problem group.
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