I want to show you other two platforms(if you don't know about them) where you code puzzles and bots.
This one: https://www.hackerrank.com/ - here are many categories of challenges from any field of programming.
And this one: http://theaigames.com/ - here you can write bots for the most known challenging games: Go, Poker etc.
Like and share if you enjoy this. I hope you will have fun coding on these platforms!