Earned on 28 Jan 2012 for solving Problem 1. Times 2 - START HERE.

Earned on 13 Oct 2016 for liking Problem 43494. Weighted Convolution.

Earned on 28 Jan 2012 for commenting on Solution 11462.

Earned on 22 Jul 2016 for creating Problem 42914. Counting the Grand Primes.

Earned on 21 Aug 2016 for solving all the problems in CUP Challenge.

Earned on 28 Aug 2016 for first solving Problem 42935. Sums of cubes and squares of sums.

Solve a problem with a best solution.

Must have 50 solvers for a problem you created.

Solve all the problems in ASEE Challenge problem group.

Solve all the problems in Tiles Challenge problem group.

Solve all the problems in Cody Challenge problem group.

Solve all the problems in Cody5:Easy problem group.

Solve 500 problems.

Create 10 problems.

Solve all the problems in Modeling and Simulation Challenge problem group.

Solve all the problems in Indexing I problem group.

Solve all the problems in Magic Numbers problem group.

Must receive 25 total likes for the problems you created.

Solve all the problems in Indexing II problem group.

Solve all the problems in Matrix Manipulation I problem group.

Solve all the problems in Computation Geometry I problem group.

Solve all the problems in Cody5:Hard problem group.

Must receive 50 total likes for the solutions you submitted.

Must receive 10 likes for a problem you created.

Solve all the problems in R2016b Feature Challenge problem group.

Must receive 10 likes for a solution you submitted.

Solve all the problems in Strings I problem group.

Solve all the problems in Matrix Patterns problem group.

Solve all the problems in Divisible by x problem group.

Solve all the problems in Sequences & Series I problem group.

Solve all the problems in Sequences & Series II problem group.

Solve all the problems in Matrix Manipulation II problem group.

Solve all the problems in Cody Problems in Japanese problem group.

Solve all the problems in Indexing III problem group.

Solve all the problems in Computational Geometry II problem group.

Solve all the problems in Functions I problem group.

Solve all the problems in Strings II problem group.

Solve all the problems in Sequences & Series III problem group.

Solve all the problems in Matrix Patterns II problem group.

Solve all the problems in Card Games problem group.

Solve all the problems in Matrix Manipulation III problem group.

Solve all the problems in Strings III problem group.

Solve all the problems in Number Manipulation I problem group.

Solve all the problems in Computational Geometry III problem group.

Solve all the problems in Computational Geometry IV problem group.

Solve all the problems in Computer Games I problem group.