my think seems to be right. that chall is focused on encoding. i tried base 2*16 decoding. but failed.
as raise ValueError('Invalid Base-65536 code '
ValueError: Invalid Base-65536 code point: 113
on the https://www.better-converter.com, U+0071 LATIN SMALL LETTER Q is not a valid base65536 character as error.
am i wrong track.
plz. teach me..