This is really cool.

C translation kumited

Yeah, it's impossible to really forbid imports in Python. Maybe this constraint should be removed altogether. To quote the guidelines:

Do not use requirements which cannot be reliably tested, enforced, or expressed in terms of a kata. Some requirements simply do not translate well into a kata, and code restrictions ("Do not use X", or "You have to use Y") is one example of such.

Fun kata !

May I suggest that you raise this as an issue, not a suggestion.
EDIT : It would also be useful to mention the language ... the error seems to be only in python.

Not my translation but added your test.

Fun kata, harder than first expected (as often with g964 katas ...)

But a minor issue for python :
My solution is wrong for short strings and still passes most of the times.
I suggest adding the following test :

test.assert_equals( moving_shift("zokieciaxul", 24) , ['xnk', 'jgf', 'mfd', 'bt', ''] )

Nice use of the True = 1, False = 0

Thanks for the suggestion. :D That one is JS only... :(

Interesting kata!

Nice kata! I suggest that people looking for a similar 'deduction' problem with a bit more challenge, check out this kata.

Great Kata - Kudos for sure.

Oof, took quite an effort to figure out how to solve it. OP, good job)