Active series

No. of posts	Name	Frequency	Difficulty
25	Siri's Medium (Inactive)	Daily	5/10
5	zkfcfbzr's unamed series (Inactive)	Irregular	4/10

If you want to start your own challenge series, create an index post like this one, and let me know in the comments.

Resources

• Discord bot to mirror posts in this community using RSS.
• KaTeX so you can include a screenshot of your maths.