Logic Masters Deutschland e.V.

With Old I mean Ancient. Spirals are among the oldest known man made symbols. Have fun solving it!!

===Rules for this puzzle:===

Normal Sudoku rules apply.

Lines: Neighboring digits along the line has a deference of 3 or more horizontally and 4 or more vertically.

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Notes:
R4C3 and R5C3 are vertical neighboring digits and have difference of 4 or high.
R2C7 and R2C8 are horizontal neighboring digits and have difference of 3 or high.
R3C2 and R3C3 are Not neighbouring digits and can have any difference.
R3C6 and R4C6 are Not neighboring digits and can have any difference.

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f-puzzle link:

f-puzzle-(An Old Cryptic Symbol)