https://www.codewars.com/users/guille0
Codewars is a website that features coding challenges (called Katas) in many different languages. They are ranked from kyu 8 (easiest) to kyu 1 (hardest).
Users also get a ranking from kyu beginner (kyu 7/8) to proficient (kyu 1/2).
These are my solutions to some of my favourite katas.
https://www.codewars.com/kata/mine-sweeper/python
https://www.codewars.com/kata/sliding-puzzle-solver/python
https://www.codewars.com/kata/break-the-pieces/python
https://www.codewars.com/kata/insane-coloured-triangles/python