Earned on 14 Apr 2012 for solving Problem 1. Times 2 - START HERE.
Earned on 15 Apr 2012 for commenting on Problem 586. All Humans are Created Equal - Pareto Equality.
Earned on 24 Jul 2015 for liking Problem 42461. This is a palindrome and so am I.
Earned on 14 Apr 2012 for creating Problem 586. All Humans are Created Equal - Pareto Equality.
Earned on 19 Jan 2015 for first solving Problem 2130. Orthonormal matrix.
Earned on 14 Aug 2015 for solving all the problems in CUP Challenge.
Solve a problem with a best solution.
Earned on 12 Oct 2016 at 18:15 for having 50 or more solvers for Problem 1303. Is the paranthesis sequence balanced ?.
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.
Earned on 5 Aug 2015 for creating 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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