In the past years @Michael Hale was publishing very nice notebooks of his solutions:
- 2021: Advent of Code 2021 solutions in Wolfram language
- 2020: Advent of code 2020 solutions in Wolfram language
It would be great to see some code from all of you guys here on Community. It is so easy to embed a notebook with code so others can download and play with it. I think @Catalin Popescu is also on this forum.