Logic Masters Deutschland e.V.

It's nice to have some variants I can always depend on!

----

Rules:

- Normal sudoku rules apply.

- Renban - digits on a purple Renban line form a consecutive set in some order.

- German Whispers - neighboring digits on a thin green German Whisper line differ in value by at least 5.

- Ratio Kropki - digits separated by a black Kropki dot are in a 2:1 ratio. No negative constraint.

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

----

Sudokupad