Only works because test suite isn't extensive enough. Wouldn't work with a = [1 0 1; 0 0 0; 0 1 0], for example.
This solution has a minor bug, but it fortunately passed the test suite. :-)
It's supposed to be a n-QUEENS checker, not an n-KINGS checker. This solution wouldn't work with a = [1 0 1; 0 0 0; 0 1 0], for example.
Thanks yurenchu! I added your proposed test point to the tests.
test suite needs additional samples that fail due to diagonal movements (e.g. [1,0;0,1])
I added this test. Rescoring now. Thanks for the suggestion.
Remove any row in which a NaN appears
All your base are belong to us
Twins in a Window
Create an index-powered vector
length of a vector
When Was That Goal Scored?
Find the stride of the longest skip sequence
How long is the longest prime diagonal?
Put two time series onto the same time basis
MatCAT - Reconstruct X from Its X-rays
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