Quine relay [1] is to this day the most "I will never understand this" brainfuck project I have ever seen.
> This is a Ruby program that generates Rust program that generates Scala program that generates ...(through 128 languages in total, including brainfuck!)... REXX program that generates the original Ruby code again.
It is so mysterious how it's even possible, and hilariously the explanation of how it was made exists in Japanese only. I think at this point it would be easier to learn Japanese than to try to understand this project.
Other things like a brainfuck interpreter in brainfuck are impressive but don't come nearly as close to black magic as quine-relay.
> This is a Ruby program that generates Rust program that generates Scala program that generates ...(through 128 languages in total, including brainfuck!)... REXX program that generates the original Ruby code again.
It is so mysterious how it's even possible, and hilariously the explanation of how it was made exists in Japanese only. I think at this point it would be easier to learn Japanese than to try to understand this project.
Other things like a brainfuck interpreter in brainfuck are impressive but don't come nearly as close to black magic as quine-relay.
[1] https://github.com/mame/quine-relay