Beautiful!

Thanks! noted

I don't want to be rude either (luci, you solved the kata, good job). However this code is awful. An important concept in programming is "DRY", which stands for: don't repeat yourself. This video explains it adequately: https://www.youtube.com/watch?v=IGH4-ZhfVDk

Why is it closer?

7x7 needs to have an efficient code.

solutions of 6x6 may be too slow to pass 7x7's tests if not "well concieved"

I agree that it wouldn't add anything, it just feels weird that it's missing imho. What is the difference between 6x6 and 7x7 version? I can't imagine an approach that works for the first but not for the latter in the given time.

5x5 for more honor? :P

That wouldn't have any interest because it wouldn't bring anything new.

• 4x4 allows brute force
• 6x6 forbids brute force
• 7x7 needs to have an efficient code.

So, what for the 5x5?

I feel that there should be a 5x5 version of the Skyscrapers kata series, since the 4x4, 6x6 and 7x7 are already present. Generally I would avoid to have such similar katas (I used my solution easily for all three of them), even if it rewards the solver to implement a solution for a general n. The 7x7 should be the only one present imho.

I'm just baffled thinking how many hours you've spent into this without thinking on an extendible solution that works for a general n (since you can find here the 4x4 and 7x7 versions as well). I have to say I'm quite amazed, but for next problems I suggest you spend more time on planning before jumping in to coding, you could've earned 3x times more points (for what it's worth) and saved so much effort. I didn't mean to be rude, was just a bit shocked in seeing a 2600+ lines solution.

I have 5 full months of Python so I worked with what I knew .
Anyway the ask was to resolve, not to make it fast or beautiful.
Make more difficult kata for this grade .

Nice catch, thanks!

Really???

your comment will displayd on the dashboard. everybody can see it. ;-)

Thank you for your comment, I will pay attention to that. However, I don't understand one thing. Will my reply to a solution be visible to user who haven't yet completed the kata?