Normal sudoku rules apply.
Killer cages: the sum of the digits in a cage is equal to the number in its corner.
Renban lines: each pink line contains a set of consecutive digits, in some order.
Digits with an X between them sum to exactly 10.
The digit in the square tells how many distinct digits appear in circles. For example, if the circles were 122333, the square would be 3.
Solution code: The digits in the 8th row, from left to right.
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