I think several of the solutions to this problem would return a false positive on the vector [1 0 0 2].
I like this problem and I like chess.
Fantastic problem since it offers introductions to graph theory, specifically Hamiltonian path problems, time complexity, neural network solutions, and Warnsdorf's Rule. Thanks
easier than I expected
interestingly, 1774-ggl == leet-ssh
should change the test suite to also include moves of 1,1 or 2,2 which this solution would not prevent...
First non-zero element in each column
letter yes yes & letter no no
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