Logic Masters Deutschland e.V.

Rules: Normal Sudoku rules apply. Put the digits 1 to 9 once each in each row, column and box.
Production Lines: Digits along a line sum to the product of the digits in the squares at either end of the line (if it is the same square, multiply that digit with itself). The sum does not include the digits in the squares. Digits may repeat on a line if permitted by the other rules.

Links:
SudokuPad: https://sudokupad.app/uyakkp4064