Logic Masters Deutschland e.V.

Rules: Normal Sudoku rules apply. Cells that are a knight's move apart are not allowed to contain identical digits. Both endpoints of a red line have to be equal to the arithmetic mean of all digits on the line. Digits can repeat on red lines if allowed by other rules. In each box, the box number (1=top left, 2=top center, etc.) has to be placed on a red line.
You can play this puzzle via the following link: https://sudokupad.app/fxhdaslh76