In Generate, if our symmetrical parnter has already been cleared, then discard it. This seems like it SHOULD have solved #134, but in practice does not appear to have.
In Generate, if our symmetrical parnter has already been cleared, then discard it. This seems like it SHOULD have solved #134, but in practice does not appear to have.

jkomoros/sudoku,jkomoros/sudoku,jkomoros/sudoku