Logic Masters Deutschland e.V.

In the Shadows, by pmays123

• Normal 9x9 sudoku rules apply.
• SHADED CELLS: Shade one cell in each row, column, and box. Digits cannot repeat in shaded cells.
• UNSHADED SUMS: Clues outside the grid relate the sum of all unshaded digits before the shaded cell in its row/column to the sum of all unshaded digits after the shaded cell. For example, "3x" means the sum of digits before the shaded cell is three times the sum of digits after the shaded cell.

("+8" means the sum before is 8 more than the sum after. "=" means the sums are equal. "<" means the sum before is less than the sum after)

• A "?" represents a number from 0-9. Different question marks can represent the same or different numbers. For two-digit clues, the "?" takes the place of the ones digit or tens digit; for example "?1" may be 01, 11, 21, etc., and "??" may be 00, 12, 30, etc.

Link to Puzzle: SudokuPad

Good luck, have fun, and I hope you have a delightful day! :)