Normal sudoku rules apply. Digits along an arrow sum to the digit in the circle. In cages, digits sum to the total in the corner. Cells connected by a white dot differ by the number inside the dot.
Clues outside the grid are anti-X sums. Digits in the farthest N cells of the row/column sum to the clue, where N is the first cell in the row/column.
Solution code: Row 2 and Row 8 (no spaces)
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