Knowledge Was Collected 4

Advent of Code

https://adventofcode.com/

You know I had to mention this one. It is incredible. Play Advent of Code. As of today we are on day 5 and it is incredibly fun!

Advent of Code: Behind the Scenes

https://www.youtube.com/watch?v=uZ8DcbhojOw

Advent of Code again? Yes.

This is a cool video from the creator of this fun advent talking about behind the scenes: how the puzzles are created and verified.