This is the puzzle of December 13, 2021 of the Advent Of Code solved with the Commodore 64 in Basic. This program earned me my 25th and 26th star :-)
The puzzle is here: https://adventofcode.com/2021/day/13
The Basic source code is in the file "aoc.txt". The executable binary is in "aoc.prg".
Be patient, because the program runs about 3 hours and 28 minutes to solve both parts of the puzzle.
Here is a screen shot:
Have fun.
Norbert