Author: Krill/Plush
System: Commodore 64
Language: Commodore 64 Basic V2
Length of source code: 77 characters to type in (85 characters if compatible with petcat)
Length of executable file: 71 bytes
Instructions on how to run the code: Install vice, drag and drop the prg file into it (x64sc)
How it works: Arithmetically, symmetries exploited via ABS(), merge via Boolean operations