python (probably others too): one of the following should be part of the final fixed tests:

• A1-B2
• A8-B7
• H1-G2
• H8-G7

Otherwise some incomplete solution can pass.

Done by OP

Approved

Pretty challenging kata, keep it up.

A portion of arr in random tests should be tested instead of full array to avoid solutions like this

python new test framework is required. updated in this fork

Approved

python new test framework is required. updated in this fork

the more i understand python and enter the solution page,
the more i am amazed thinking how wonderful human brains are!!!
and become curious why people feels threatened by A.I.?!

Nice kata!

b7 -> d6 -> c8, 2 moves. Not a kata issue.

(C++ solution)
Randomized_Fixed_Tests:
b7 -> c8
Expected: equal to 2
Actual: 4

How is it possible?

@modernLifeRock - Hi; at first I thought you were making a silly mistake but your solution is really interesting so I ended up debugging on my IDE.

I think your mistake is due to you introducing another argument to the function, and it seems that the tests then keep the data_structure_that_you_have_used between tests. I'm not 100% sure, because the Python tests themselves are a bit out-of-date so I don't completely understand how they are being run.

Long story short - try this to see if it works:

1. replace cache_sq= XYZ (where XYZ is the data structure you are using) in your function's arguments with cache_sq = None

2. then, inside your function as the first base case, put if cache_sq is None: cache_sq = XYZ where XYZ is the (empty) data structure you are using

I'm using XYZ to avoid having to spoiler my comment - otherwise you won't be able to see it until you have solved the kata.

get a similar problem with my python implementation. Did you ever figure out what the problem wa?

My (python) solution works on about 100-200 test cases but fails the rest. When I take an example failed test and put try it on my IDE, it works. Anyone know why this might be the case?

Loved the variety in the solutions. I went straight for the "general" approach I'm most familiar with and solved the kata quickly, and did not think of a better solution for this particular case. Good lesson learnt.