Sum Neighbors

Sudoku, Runsums

• Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box.
• Runsums: Clues outside the grid give the sum of all digits that are consecutive with at least one of the adjacent digits in the corresponding row or column. For example, a row with digits 167853249 would have outside clue 26 = (6+7+8) + (3+2).

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