Edit: 8086tiny.freeforums.net is functional and has had a few recent posts.
I would love to see a version of it written to be as readable as possible. (If there is such a thing already out there, pointers are welcome, thanks!)
That is some nice code, many thanks for the link.
There are some nice easter eggs in the source
If you are interested in an actual minification process of a winning IOCCC entry, Don Yang , who has eight (!) winning entries, has put a compressed screencast alongside with recent winning entries (example:  is a screencast for ). My experience (I too have one winning entry) had been similar.
Many years ago I wrote some obfuscated Perl, assisted by the fact that the language is pretty obfuscated to start with. https://flatline.org.uk/snowflake.pl.txt - I think I may have had a tool to help it fit the template, but since you can't have a space in the middle of an operator restructuring the program to make the operators fit the snowflake was a major part of the effort.
While there's an "unobfuscated" version of the emulator program in this thread, it's clearly not the same program - there's no "switch/case" in the obfuscated version.
a == x ? do1() : a == y ? do2() : do3();
This code likely doesn't optimize quite as well. Several cute things you can do with switch statements cannot be translated so easily.
The instruction decode mechanism is a chain of "e--||(expression), e--|| ..." expressions. At the point where e-- is zero the expression will be evaluated.
The program makes heavy use of the equivalence between "index[pointer]" and "pointer[index]", presumably to save brackets.
I n t,e,l,*E,m,u,L,a,T,o,r
But it did include its own Basic I/O System in the source:
If you liked this, I also suggest take a look at Christopher Mills entry from 2018, which is a PDP-7 emulator, which doesn't use the BIOS tables trick.
[disclaimer: I am an IOCCC Judge]