Puzzle rules

Sudoku Repair

Repair the incorrect 9×9 Sudoku. First solve the outside Nonogram clues to identify the shaded cells; those cells contain the incorrect entries. Replace only those entries so the completed grid follows standard Sudoku rules.

How to solve

Complete rules

Goal: Identify and correct the wrong entries in the Sudoku grid. Rules: - Use the row and column Nonogram clues to determine which cells must be shaded. - Every shaded cell marks an incorrect Sudoku entry; unshaded entries remain fixed. - Replace the incorrect entries so each row, column, and 3×3 box contains the numbers 1–9 exactly once.

  • Sudoku
  • Nonogram
  • Logic
  • Grid
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