Since things are 'truthy' unless they're set to false you can omit '== true'

Test cases are locked after 500 completions

You can always print arguments to the console to figure out what went wrong.

Biggest n is about 3*10^6.

Ruby

Which language?

Resolved my submission (it was related to the Romer conversion) but this could still be a problem for others

Very frustrating to find another Kata with non-descriptive error messages e.g. 1 failing with "Expected: 230, instead got: 63"
Please list the inputs you are testing for so can actually deduce where the problem is.
In this case, what was the input? What is the temp conversion?

Thanks

Code works on all local tests, failing 4th test on Ruby when submit, no comments, feedback or examples of passing numbers makes this far too challenging for level of Kata to progress on.
Please elaborate on what the expected values are on 4th test and consider adding comments to other tests.

Thanks.