Earned on 27 Jun 2012 for solving Problem 1. Times 2 - START HERE.
Like a problem or solution.
Comment on a problem or solution.
Earned on 15 Nov 2012 for first solving Problem 1036. Cell Counting: How Many Draws? .
Earned on 21 Dec 2012 for creating Problem 1133. Go-style solver.
Solve a problem with a best solution.
Solve all the problems in Tiles Challenge problem group.
Must have 50 solvers for a problem you created.
Solve all the problems in Cody Challenge problem group.
Solve all the problems in ASEE Challenge problem group.
Create 10 problems.
Solve 500 problems.
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.