Logic Masters Deutschland e.V.

As with "Promenade", this puzzle was a birthday gift - in this case, for Aspartagcus!

Rules:

- Normal sudoku rules apply.

- XV sums - digits separated by X sum to 10; digits separated by V sum to 5. No negative constraint.

- Kropki dots - digits separated by a white Kropki dot have a difference in value of 1; digits separated by a black Kropki dot have a value ratio of 1:2. No negative constraint.

- Renban - digits along a purple Renban line form a set of consecutive digits.

- German Whispers - digits along a green German Whispers line must differ in value from their neighbors on the line by at least 5.

Sudokupad link