Logic Masters Deutschland e.V.

Rules:

Normal Sudoku rules apply.

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 Whispers line (i.e., adjacent digits on the loop must have a difference of at least 5).

Cells containing arrows indicate ALL of the orthogonal directions which tie for having a loop cell appearing closest to the clued cell. Cells containing clues cannot be on the loop.

A digit in a clued cell counts the combined total number of loop cells in all directions indicated by the arrow(s) in that cell.

6x6 Example:

The image below shows a sample 6x6 puzzle and solution with the same rule set.
Note: For 6x6 Sudoku, adjacent digits on a German Whispers line must have a difference of at least 3 (instead of the usual 5)
Play the example 6x6 in SudokuPad.