Problem 1697. Make a Pandiagonal Prime Magic Square: 11 x 11
Richard, I think your test suite has an error in it. Both pd and pad will result in the same matrix, as they're both circshifted by [1 1-i] Will pad=fliplr(pad); after the for loop correct this problem?
Test Suite fixed. Who new that 1-i is the same as -i+1.
The circular shift should be made from first row, not the 2nd, and the "knight" always moves down from the first column of the row to the last column in an L-movement.
I fully agree with the comments by Rafael S.T. Vieira. The problem is nice but it was badly explained
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