Reading the article, I can't believe I just found out Code Golf is a thing. I've been a programmer for more than a decade.
But yes, amazing project! I like that it's human-made :)
Get thee to
Also https://github.com/nanochess
And then if you really want to go large
https://phoboslab.org/log/2021/09/q1k3-making-of
I still have a soft spot for https://www.pouet.net/prod.php?which=1221
This is my favorite : https://www.cise.ufl.edu/~manuel/obfuscate/pi.c
The quintessential example is donut.c. I was amazed when I first came across it.
https://www.a1k0n.net/2006/09/15/obfuscated-c-donut.html