Earned on 10 Oct 2017 for solving Problem 2015. Length of the hypotenuse.

Earned on 24 Oct 2017 for liking Problem 44360. Pentagonal Numbers.

Earned on 25 Oct 2017 for commenting on Problem 2023. Is this triangle right-angled?.

Solve all the problems in CUP Challenge problem group.

Solve a community group

Create a problem.

Solve all the problems in Introduction to MATLAB problem group.

Solve a problem first.

Solve a problem with a best solution.

Must have 50 solvers for a problem you created.

25 solvers for the group curated by the player

Solve all the problems in Cody Challenge problem group.

Solve all the problems in ASEE Challenge problem group.

Solve all the problems in Tiles Challenge problem group.

Solve 500 problems.

Solve all the problems in Cody5:Easy problem group.

Create 10 problems.

Solve all the problems in Project Euler I problem group.

Solve all the problems in Indexing I problem group.

Solve all the problems in Draw Letters problem group.

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

Solve all the problems in Indexing II problem group.

Solve all the problems in Matrix Manipulation I problem group.

Solve all the problems in Magic Numbers problem group.

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

Solve all the problems in Computation Geometry I problem group.

Must receive 25 total likes for the problems you created.

Solve all the problems in Matrix Patterns problem group.

Solve all the problems in Strings I problem group.

Solve all the problems in Divisible by x problem group.

Solve all the problems in R2016b Feature Challenge problem group.

Solve all the problems in Number Manipulation I problem group.

Solve all the problems in Matrix Manipulation II problem group.

Solve all the problems in Matrix Patterns II problem group.

Solve all the problems in Cody5:Hard problem group.

Solve all the problems in Indexing III problem group.

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

Solve all the problems in Functions I problem group.

Solve all the problems in Magic Numbers II problem group.

Must receive 10 likes for a problem you created.

Solve all the problems in Matrix Patterns III problem group.

Must receive 50 total likes for the solutions you submitted.

Solve all the problems in Indexing V problem group.

Solve all the problems in Card Games 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 Manipulation III problem group.

Solve all the problems in Number Manipulation II problem group.

Solve all the problems in Computational Geometry II problem group.

Solve all the problems in Indexing IV problem group.

Must receive 10 likes for a solution you submitted.

Solve all the problems in Strings III problem group.

Solve all the problems in Computational Geometry IV problem group.

Solve all the problems in Word Puzzles problem group.

Solve all the problems in Computational Geometry III problem group.

Solve all the problems in Combinatorics - I problem group.

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

Solve all the problems in Computer Games I problem group.

Solve all the problems in Board Games I problem group.

Solve all the problems in Logic problem group.