You can't jump from 75 to 77, The only possible paths from 75 lead to 73 and 7.

Normally it should occur very rarely, so it's not an actual problem to pass the kata (~70 completions dealt with this so far)

Now about the "why"... The original author isn't active anymore, and I already spent way too much time on this kata (I'm not talking about solving, there). So yeah, I'm not the one who would fix that, sorry...

edit: if it occurs very often for you, that would mean you're algo is actually incorrect.

duplicated issue. It's already known, no need to raise again.

Because it opens a path which will lead to a greater overall result.

But 95 is greater than 64. Why is 64 the correct choice?

What do you mean 'total sum' should be max? I have spent almost an hour trying to understand.

pass the small and the medium but not random and big one :(

just don't post you solution to this one in the easize version, plz... x/

Thanks for this discussion.

"you are in a building, there are different rooms (without any door linking them... :o ), extract the shape of each individual room as delimited by its walls. Only closed rooms are valid."
This should really be in the description, it's much clearer (there's no reason to keep "+--+" for pieces, but it makes sense if it's a wall).

I think I have the easy solution, I'll practice Python just for the occasion =)

What do you mean by "total sum" should be max?
Edit: Got what it means. now need to figure out how to do it.

I don't get it, why 64 is second instead of 95?
UPDATE: I got it: the total sum should be max, not any individual number.

THANK YOU.

manual notification, read above, plz

done.