On the 18 day of Christmas, my true love gave to me:
Hitori Holiday Hustle
How to play Hitori
Santa needs you to fill some of these in! In this grid some cells have to filled black in such a manner that in each row and each column no number appears more than once in a white cell. Blacks cells must not appear side by side or on top of each other. No white cell must be cut off from the rest of white cells. They need to be all linked with their sides.