Logic Masters Deutschland e.V.

Another new constraint for me - this time it's indexing lines! Much thanks to Sujoyku who spotted a clue that opened up this puzzle and saved it from some annoying scanning.

Rules:

- Normal sudoku rules apply.

- Index Lines: On an turquoise line, the digit in the Nth cell along the line (starting from the diamond) indicates the position along the line where the digit N appears - Eg: 3214 would be a valid line; the 1st digit, 3, indicates that the 3rd digit is a 1, and so on. If multiple lines exist with the same diamond, each line is treated as separate.

- Dutch Whispers: Adjacent digits on an orange Dutch Whispers line must have a difference of at least 4.

- XV sums: Digits with an X between them sum to 10; digits with a V between them sum to 5. No negative constraint.

- Kropki Dots: Digits with a white Kropki dot between them have a difference in value of 1. Digits with a black Kropki dot between them have a value ratio of 1:2. No negative constraint.

Sudokupad link