On Mon, Mar 30, 2015 at 7:57 PM, Ian Kelly <ian.g.ke...@gmail.com> wrote: > On Mon, Mar 30, 2015 at 2:16 AM, Dave Angel <da...@davea.name> wrote: >> The relationship between row, column and box can be rearranged. Some of >> these are already covered by the rotations proposed earlier, where for a 90 >> degree rotate, row becomes column and column becomes row. But in a similar >> way each box could become a column, and so on. > > I don't think this one is valid. The intersection of a row and a > column is one cell. The intersection of a row and a box is three > cells. If you swap a column with a box, you're changing the > relationships between the squares and the result will not be > isomorphic to the original.
But if you swap *every* column with *every* box? ChrisA -- https://mail.python.org/mailman/listinfo/python-list
