Logic Masters Deutschland e.V.

Rules
Normal sudoku rules apply.
Digits must not repeat along the positive diagonal.
Cells that appear in the same relative position in their 3x3 box must not contain the same number (disjoint groups).
Within a cage, digits must sum to the small number written in the top left of that cage.
The sum of the digits along an arrow is equal to the digit in the connected circle.
Gray lines are palindromes, which contain the same sequence of digits in either direction.
Digits along the indicated diagonals must sum to the total given (digits may repeat if allowed by other rules).

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