Normal Sudoku rules apply. Digits in a cage must not repeat and must sum to the small clue in the top left corner of the cage. Digits separated by a white dot are consecutive. Not all dots are given. Draw a one-cell-wide loop of orthogonally connected cells. The loop may not touch itself, not even diagonally. The loop must enter every cell of every cage. The loop acts as a German Whispers line (i.e., adjacent digits on the loop must have a difference of at least 5). Additionally the grid is partially covered in fog. Placing correct digits will clear the fog from surrounding cells, possibly revealing more clues.
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