Rules:
- Hidden sandwich clues outside the grid (dashes) give the sum of the numbers between the 1 and 9 in that row/column.
- The digit nearest each dash must be a factor of that sandwich clue.
- Sandwich clues cannot be 0
- Normal sudoku rules apply
Penpa Link: Click Here
F-Puzzles Link: Click Here
Solution code: Column 4 and column 6 (no spaces)
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