Posted: May 04, 2021 6:00 AM CT | Last Updated: May 4 Staff at the Saskatchewan Penitentiary sent Zoë Christmas's package back to her, saying the sudoku puzzles fell under the banner of 'inappropriate content.'(Submitted by Zoë Christmas) Zoë Christmas was shocked when the Saskatchewan Penitentiary rejected her package of puzzles and literature. The contents destined for an inmate in search of literature included sudokus, one short story and a few newsletters — all printed on individual sheets of paper. Correctional Service of Canada returned the contents with a list of "seemingly harmless" items it won't accept by mail, saying this is in an effort to keep drugs and contraband out of secure prisons.