Pennington
by Jakhob and wooferzfg

This Chaos Construction puzzle is named after a character in Paper Mario: The Thousand-Year Door.

Rules

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

A digit in a cell with arrows indicates the number of cells seen in the indicated directions combined, including itself. Region borders obstruct vision.

4x4 Example Puzzle
Puzzle Links

Play on SudokuPad

Play on Penpa+