Logic Masters Deutschland e.V.

Rules
Normal sudoku rules apply.
The sum of the digits along an arrow is equal to the digit in the connected circle.
Draw a one-cell-wide loop of orthogonally connected cells. The loop may not touch itself, not even diagonally.
The loop acts as a "german whisper" line: adjacent digits along the loop must differ by at least 5.
All arrows' circles are on the loop. Additionally, each arrow tip points towards a cell containing the digit within the arrow's circle, and the pointed-to cell is also on the loop. The digit in the arrow tip indicates the distance from the arrow tip to the pointed-to cell.
There might be other instances of the same digit between this cell and the arrow tip.
The loop contains at least 7 different digits.

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