Suggestion: Show the location of the error in crosswords

Hi, There has been a suggestion that if all the squares in a crossword puzzle are filled in and there is an error somewhere, the location of the error could be shown. I personally think that showing the square makes solving too easy. Maybe it would be enough to show the column or row where the error is located?

The thing is, the crossword puzzles aren't the easiest at the moment - they contain fish, birds in Russia, etc.

You could show me, for example, I was looking for a mistake for a long time. There was a mistake in one letter and it can't be solved.

There could be an option to show the error or not. There is no such option in Sudoku, so I can't say whether it should be in a crossword puzzle or not.

Generally not in favor; the more you search, the smarter you get...

could this be communicated clearly (in a different color, etc.)? At the moment, it is never certain whether it is correct or not.

Done!