Normal sudoku rules apply, and all clues are standard. Arrows: the sum of the digits along an arrow is equal to the digit in the connected circle, and these digits can repeat if allowed by other rules. Renban lines: purple lines contain a non-repeating set of consecutive digits in any order. Quadruple circles: a digit inside a white circle appears in one of the four cells surrounding that circle. Digits in cells separated by an X sum to 10.
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