The calcudoku.org 2013 End Of Year Puzzle
I have solved this 17x17 puzzle proposed on Dec 24, 2013. Btw, I suggest to include the drawing in the Forum for future reference since logically after some time that special link will be removed.
Despite those big cages (8-cell, 7-cell and three 6-cell cages, ...) the puzzle is easy-medium in my opinion though it requires some time. What makes it interesting is the presence of the "prime" number 17
, of course. Like in the past (with other Christmas puzzles) probably awarding some points to it (i.e., via a book code) would motivate more puzzlers to complete it.
(This is the first 17x17 calcudoku proposed in this site IIRC)