Oops. Should have tried to pass with the obvious, slow solution first. Spent a while working on a quick one.

Lesson learnt!

Well ... maybe more interesting solving my performance version :)

I made this a little harder by not reading the last bit on the instructions ... :)

I really enjoyed the kata, and found it challenging, but I think (and please feel free to disregard this) maybe things need a tweak in some way ??? ... my preference would be to just ask for any solution (and change the return type to a single string).

Though I can totally understand it was a lot of effort finding puzzles with unique solutions!

If you're happy I'll mark this as resolved

Reading the comments below: if you're looking for suggestions of how to change the description then maybe just asking for any solution, and then validating could be a way to go. And possibly some unsolvable puzzles???

Thanks for the kata. Easy to understand the problem ... tricky to solve. I enjoyed it :)

I've bashed together a solution which passes the tests fine, with the caveat that it returns the first fit to each puzzle.
The description asks to exhaustively search, but all tests have only a single solution.

Glad you enjoyed it! It was my first Kata :)

I'm half way through sorting out part 2, but am waiting for this to be approved before adding anything more. It seems to be a bit of a slow process.

Hi there, and thanks for the feedback. I'll try to answer your points one at a time:

1. "Sorted by what order?" ... the strings are sorted in the standard order, using standard string comparison.
2. "The bounding boxes for pieces are not always cubes" ... correct
3. "What is invalid input?" ... any input that does not conform to piece encoding specifications
4. The tests don't test for invalid input ... correct ... I did have one but it seems to have gone missing - I'll add another one!

Thanks.

I have added some extra clarifications in the description.

Any more feedback gratefully recieved.