Logic Masters Deutschland e.V.

Rules: Normal Sudoku rules apply. Put the digits 1 to 9 once each into every row, column and 3x3 box.
Fog: The grid is partially covered in fog. Placing correct digits will clear the fog from surrounding cells.
Weighted Cells: One cell in each row, column and box is lighter than normal. Lighter cells have a value equal to half of their digit. Each digit from 1 to 9 appears once in the set of lighter cells.
One cell in each row, column and box is heavier than normal. Heavier cells have a value equal to one and a half times their digit. Each digit from 1 to 9 appears once in the set of heavier cells.
No cell is both lighter and heavier.
Region Sum Lines: The sum of the values on a line within a box must be the same for each box that line passes through. If a line passes through a box more than once, each time it passes through counts separately. Lines do not branch, cross or share cells.

Links:
SudokuPad: https://sudokupad.app/sqdra9pozn