Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

If a cell contains an arrow, it represents an X-sum starting from this cell: add the values of the X cells in the direction of the arrow, including the cell containing the arrow, where X is the value of the cell.
The value of the X-sum is given by the number formed by the cell or cells situated before the arrow, read in the direction of the arrow.

Digits separated by an X sum to 10. Not all the Xs are given.

Enjoy!

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