my kata only counts the number of prime pairs and does not return an array. Does that count?

No, unless there is a (simpler) algorithm to compute the number of pairs without generating them.

Duplicate:

• https://www.codewars.com/kata/56cf0eb69e14db4897000b97
• https://www.codewars.com/kata/578dec07deaed9b17d0001b8

There is a theorem [...]. We can't prove it, [...]

If we can't prove it then it's a conjecture, not a theorem.

• There should be more random tests (~ 100). Random tests shold always cover both valid and invalid (no path) cases.
• Returning different types (list/bool) is bad practice. When there isn't a path the function shopuld return a "no-value" (None in python) or raise an exception.

No random tests.

What happens in these duels?

• Lunge - Lunge
• Parry - Parry
• Parry - Block
• Block - Block

Python: function and parameter names should be snake_case.

• No sample tests
• No random tests
• No initial solution
• Extra solution in preloaded

https://docs.codewars.com/authoring/kata

Fixed.

Duplicate: https://www.codewars.com/kata/5b93fecd8463745630001d05

No tests.

• https://docs.codewars.com/authoring/guidelines/sample-tests
• https://docs.codewars.com/authoring/guidelines/submission-tests
• https://docs.codewars.com/languages/python/codewars-test

• Initial solution should #include <vector> and <string>.

Python initial solution:

• 'e's are free ('length' and 'offset' are not keyword/builtin/reserved/...)
• there should be a space after ',' in parameter list
• no semicolon at the end