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I've got it, but it's timing out after 80 test cases, which is fair enough, but one of the first test cases has no valid 4-queen solution (c3).

I test-drove it.. forgot to make it a one-liner! hah.

I've basically sorted it, but random tests are saying: Expected "", instead got: [my_solution_here]..
is this normal? Having an empty string expectation even with input?

Edit: it actually gives me a (Test::Error) message.. is that on me or the kata?

didn't get any points... annoying.

Had to look at the answer as I had absolutely no idea where to go from 'unravelling' the spiral..
does anyone have any resources to understand this concept algorithmically?

I obviously missed the ".permutation" memo...

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