Like a problem or solution

Awarded to ChrisR on 12 Aug 2020

Comment on a problem or solution

Awarded to ChrisR on 09 May 2020

Solve a problem for the first time

Awarded to ChrisR on 08 Jul 2015

Solve 500 problems

Awarded to ChrisR on 12 May 2020

Solve a problem with a best solution

Awarded to ChrisR on 30 Jun 2020

Be the first to solve a problem

Awarded to ChrisR on 10 Jun 2020

Create a problem

Awarded to ChrisR on 10 Jun 2020

Create 10 problems

Awarded to ChrisR on 28 Jun 2020

Receive 25 likes on a problem you have created

Awarded to ChrisR on 28 Sep 2020

Solve all the problems in ASEE Challenge

Awarded to ChrisR on 24 Jul 2020

Solve all the problems in Cody Challenge

Awarded to ChrisR on 19 Apr 2020

Solve all the problems in CUP Challenge

Awarded to ChrisR on 28 Mar 2020

Solve all the problems in Indexing I

Awarded to ChrisR on 20 Jun 2020

Solve all the problems in Indexing II

Awarded to ChrisR on 04 Jul 2020

Solve all the problems in Matrix Patterns II

Awarded to ChrisR on 17 Jul 2020

Solve all the problems in Number Manipulation I problem group

Awarded to ChrisR on 17 Jun 2020

Solve all the problems in Sequences & Series I

Awarded to ChrisR on 25 Jul 2020

Solve all the problems in Strings I

Awarded to ChrisR on 02 Oct 2020

Solve all the problems in Cody Problems in Japanese problem group

Awarded to ChrisR on 26 Aug 2020

Solve all the problems in Matrix Patterns III problem group

Awarded to ChrisR on 06 Dec 2020

Solve all the problems in Magic Numbers II

Awarded to ChrisR on 02 Aug 2020

Solve all the problems in Number Manipulation II problem group

Awarded to ChrisR on 12 Jul 2020

Solve all the problems in Draw Letters problem group

Awarded to ChrisR on 20 Apr 2020

Solve a community group

Awarded to ChrisR on 29 Mar 2020

Solve all the problems in Introduction to MATLAB problem group

Awarded to ChrisR on 13 Apr 2020