Solution by Ruben Westerberg

perl/ch-1.sh and raku/ch-1.sh
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Solves the Coloured Ring problem with Gauss-Jordan Elimiation. Solves the system based on error from 11 in each ring.
Run the program to display the solution.

ch-2.pl and ch-2.p6
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Lists Self Describing Numbers for a given base. Pauses for 1 second when found. Diplays a list of found numbers at the end of search.

Default base is 4. Optionally provide a single command line argument to specifiy the base to use.