Chaos Loop
by Jakhob and wooferzfg

Normal Irregular Sudoku rules apply, but the regions must be determined by the solver. All regions are orthogonally connected groups of 9 cells.

Draw a non-intersecting loop through the centers of some cells which passes through each region exactly once.

A digit in a cell with arrows indicates the total number of cells in the same region as that cell that are visited by the loop, in the indicated directions combined, including itself.

6x6 Example Puzzle
Puzzle Links

Play on SudokuPad

Play on Penpa+