Recommendations for code katas?

I’ve asked this previously in other forum, but I thought it would be worth asking here as well - has anyone found any code katas/koans that they can recommend, be they specific to F# or language-agnostic? Previous recommendations were:

If you have any others, I’d love to hear about them!


There is also, which has a decent library for F#:

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I’ve been writing lexors as a kata. BrainFuck is a good starting point because it’s really simple, then I did CSS selectors and am expanding that to CSS in general.

I ported the Wonderland Katas from Clojure to F# some time back (really liked the original project). It’s 7 katas inspired by Alice in Wonderland, with various degrees of difficulty:


I did some from and