[ANN] Spelos' Development Challenge

[Mudbill]

I'll have you know that I've been trying to think of some time-related puzzles to implement, but I couldn't come up with enough that I thought would be interesting. I definitely had some ideas I could use for a "Challenge" type CS including the time, but I wanted to integrate the time itself a lot more into what I would potentially make, which I was unable to.

Had I been able, I probably would've made something for this. This is just to blame on my lack of creativity probably.
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