Earned on 14 Apr 2014 for solving all the problems in Project Euler I.
Earned on 12 Dec 2017 for solving all the problems in Cody Problems in Japanese.
Earned on 2 Jan 2014 for solving all the problems in CUP Challenge.
Earned on 9 Dec 2013 for solving Problem 1. Times 2 - START HERE.
Earned on 11 Dec 2013 for liking Solution 290489.
Earned on 2 Jan 2014 for submitting the best solution Solution 377425.
Earned on 10 Feb 2014 for solving all the problems in Cody Challenge.
Earned on 12 Feb 2014 for solving all the problems in ASEE Challenge.
Earned on 12 Feb 2014 for commenting on Solution 401941.
Earned on 16 Feb 2014 for solving all the problems in Tiles Challenge.
Earned on 10 Mar 2014 for solving 500 problems.
Earned on 2 Apr 2014 for first solving Problem 2267. Sales Prediction.
Solve a community group
Create a problem.
Solve all the problems in Introduction to MATLAB problem group.
Must have 50 solvers for a problem you created.
25 solvers for the group curated by the player
Solve all the problems in Cody5:Easy problem group.
Create 10 problems.
Solve all the problems in Draw Letters problem group.
Solve all the problems in Indexing I 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.
Solve all the problems in Indexing V problem group.
Must receive 50 total likes for the solutions you submitted.
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 Logic 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.