Logic Masters Deutschland e.V.

Rules:

Normal sudoku rules apply in the central 9 × 9 grid.

Region product lines: Along each pink line, digits in each region multiply to the same product. This product may differ between lines. (Example: r5c6 × r6c5 = r4c8 × r4c9 × r5c7)

X-sum: A number outside the sudoku grid indicates the sum of the first X digits along the corresponding row or column, where X is the first digit along that row or column. (Example: if r2c1 were a 5, the first 5 digits in row 2 would add up to the number to the left of row 2)

For the purposes of region product lines the outside counts as a region. No other sudoku rules apply to the outside of the grid.

Play online:

Sven's Web App (CtC) (note: The conflict checker is... conflicted about how I've done the outside clues.)

I hope you enjoy! It's probably on the higher end of 3 stars difficulty, I'm not sure.