I hid this solution. Do not submit solutions like this one (do not even try it in the trainer to avoid accidental submissions). If you want to experiment, create a fork of an existing solution.

I didn't think this was possible, how can I delete this solution?

Quite an interesting kata, well done.

thank you!

This kata inspired me to make Mate with King & Queen

In python I wrote up a solution however very occasionally it would fail some random tests for example:

a = 40 b = 47 c = 4 -1.18 should equal -1.17

I think there is something wrong in the reference solution when testing the random cases because

-47/40 = -1.175 and if you round this to 2dp it will be -1.18

Personally I think this is more difficult than kyu 6, but a fun problem nonetheless :)

Are the tests for Python confirmed to be correct now? I wrote a fairly compact solution that used some techniques to simplify the algorithm giving me a lot of confidence in it, and I got all the tests correct except for one of the edge cases. I tested my program on every stalemate and checkmate position in the Wikipedia article, and got them all correct. I investigated my algorithm carefully and included some tests that wouldn't come up in a real game, such as a starting position with both kings in check from the other king and my program behaves what I think is correctly in those cases. I still don't get that one edge case.

feels like a 5 kyu because you need to track and manage a lot of state

I have same problem.
"Checkmate (often shortened to mate) is any game position in chess and other chess-like games in which a player's king is in check (threatened with capture) and there is no possible escape."
Where's the catch?

nice kata :)

but you definitely shouldn't...

Why? you can use BFS to search in matrix minimum path

Thank you for the solution, I will try it. Ah yes, I forgot to provide the spoiler flag.