I am too lazy to modify sample cases for all translations. The most of them weren't even created by me. And probably even if I will try to modify it, there is so many solutions already, so I would probably hit a timeouot from CW.
And this kata is a part of collection. So .... it's too late already.

I guess you had this issue becasue you started from the second kata in the Alphabet war collection. All katas in this collection have similar rules.

BTW. Try other katas in this collection! And thanks for your suggestion ;)

Please try to read my description again.
"(...)The other letters don't have power and are only victims (...)"

The opposite of -2147483648 in a int does not make any sense, so it's out of spec.

It is not an issue of the kata, report it as a bug at Codewars: https://github.com/Codewars/codewars.com/issues