I've not made one of these for a few years. The name is a pun by Jean-Chrostophe as I cannot remember what you call them on this forum.
No sign means addition.
Note that on the repeats I have followed standard KenKen rules - so repeats are allowed in all cages. No repeats in rows, columns or nonets (which standard KenKen does not use).
If you remember there was a whole legal argument about copyrighting the term "KenKen" so everyone used different names for it.
Minus and divide work either way. Some versions of this puzzle type such as Dr Sudoku's (FKA motris) allow longer minus and divide cages with the largest number always first.
Medium hard, about 1.0 on the assassin scale. Easy start and finish with some tricky bits in the middle.
Solution:
492163785
578294631
613785942
285417396
937526418
146839527
854972163
329651874
761348259
