Logic Masters Deutschland e.V.

Rules: Normal sudoku rules apply. Digits along arrows must add to the digit in the arrow's circle. Numbers outside the grid give the sum of the digits along the indicated diagonal. Digits may repeat on the diagonal if allowed by other rules. An X connects two digits which add to 10 and a V connects two digits which add to 5. Not all Xs and Vs are necessarily given.

Variant: Diagonals marked in pink must have the smallest amount of distinct digits. In other words, the negative diagonal must contain exactly 3 distinct digits and the other 3 diagonals must contain exactly two distinct digits each.

F-puzzles link: https://f-puzzles.com/?id=2cn3akqx
CTC link: https://tinyurl.com/2fw32ec6