More of these combo cages that act as “German Whispers” lines. In this case, some of them are square, and adjacent digits means orthogonally-adjacent, since there’s no way a square would work otherwise. For extra fun, very few of the cages have totals.
Rules:
Normal Sudoku rules apply.
Digits within cages do not repeat, and sum to the total in the top-left corner of the cage, if given.
Also, adjacent digits within cages differ by at least five.
Estimated difficulty: 2 out of 5
Solve on SudokuPad