How do I know that a certain number has been placed in all the necessary cells? Follow Tap the gear icon in the top right corner. Tap Settings. Enable the Hide Used Numbers option. Numbers that have been placed in all 9 cells correctly will disappear from the bottom panel of the game screen. Related articles How do I know that the sudoku is solved correctly and complete? How do I delete a number entered by mistake? Why do the numbers I enter look so small? I think some of the sudoku cannot be solved. The numbers can't fit in correctly. Comments 0 comments Article is closed for comments.
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