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- Index
Show mistakes
As you're solving the puzzle you may want to check if you've made any mistakes so far. Go to the menu Tools and select Show mistakes.
Nonogrid will display red arrows along rows/columns where mistakes exist. It shows logical errors, which means the colors of the squares is inconsistent with the provided clues (e.g. five colored blocks where the clue is 4).
It will check over only the rows and columns that have been completed.