Why did you approve this kata?

it's a good kata

Your own solution doesn't even always pass the tests. Didn't you consider that maybe the verification method is not correct?

I found a mistake. Can I fix it or should author do it?

I think it's best to raise an issue for this kata. I have so many questions! see what happens :)

I really love the simplicity of this solution.
However - I tested it with this input: new int[][] {{10, 11}, {1, 8}, {6, 9}, {5, 7}})
and it returns 4 - note {10, 11} does not overlap with any other request - the result should be 3.

Am I missing something?