Accepted.

Since I'm probably abandoning codewars anyways I unpublished it and leave it at that.

Please do not just post chatGPT explanations here. It's basically just the code in plain text and should at least have the spoiler flag.

Actually it seems solutions can hit a division by 0 error, too. But only in random tests which allowed some solutions to pass even if they would not work when certain values are 0.

Actually it depends on luck if there is 0 happening. Tests should be updated.

Does this Kata have a integer overflow problem in the random tests (in C#)? The negative numbers from the 2 years old issue below seams to indicate the same issue (with a different symptom).

System.OverflowException : Value was either too large or too small for an Int32.

'650 ...' should equal '65 ...' are clearly different. I think your code needs some work.

Those strings seem not to be the same. So you are not passing the tests.

integer division

Yup, same here.

"What's the problem here ???"

1. No spoiler flag. Please use it when you post code. Did it for you.
2. Code not formatted. Please see https://docs.codewars.com/references/markdown#code-block
3. Oh, you were asking about your code. Sorry, can't say much since I'm not that fluent in C and the unformatted code makes it too hard to read. (But I'm guessing the main() function should not look like that - also your solution does return '15' for n=195, but correct would be 6)

Example tests show

# From Ruby 3.0, RSpec is used under the hood.
# See https://rspec.info/
# Defaults to the global `describe` for backwards compatibility, but `RSpec.desribe` works as well.
describe "Example" do
  it "should return the sum" do
    expect(add(1, 1)).to eq(2)
    # The following is still supported, but new tests should now use them.
    # Test.assert_equals(add(1, 1), 2)
  end
end

Seen this in other ruby katas before. Seems to be a CW issue. Don't know when the last successful submittion was, but the last comment was 3 years ago.

Not a kata issue. I suppose this is javascript, right? Notice that an empty array is truthy in JS.

Check the Sudoku rules: "...and each of the nine 3 × 3 subgrids that compose the grid (also called "boxes", "blocks", or "regions") contain all of the digits from 1 to 9." - https://en.wikipedia.org/wiki/Sudoku

(Duplicated text...)