Sorry for all the false positives. I have added more test cases.
It turns out that the difference in meaning between "not both" and "both not" is critical to this problem. Do'h! Took me a while to figure out where I was going wrong. :P
Exactly what I like in Cody. Interesting and modular problem, with good explanations.
What else ?
Thank you, Jean-Marie! If I have time, I might extend the problem even further.
Oops--does not check all conditions--should not have passed.
I now see that this is not a valid solution..it has false positives but still passes the test suite :-(
Find the sum of all the numbers of the input vector
Back and Forth Rows
Tic Tac Toe FTW
Word Counting and Indexing
Symmetry of vector
Negation the hard way
Multivariate polynomials - emulate symbolic form
Find vampire numbers
Multivariate polynomials - sort monomials
Find all vampire fangs
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