Sudoku Flow
Sudoku in 30 seconds / Last Remaining Cell
Lesson 1

Last Remaining Cell

The rule

If a row, column, or box has only one empty cell, its missing number must go in that cell.

Step by step

  1. There is only one empty cell left in this row.
  2. The only possible number is 2!
Read the full lesson, with more examples →Watch on YouTube
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Sudoku Flow is made by Rubigo Games, the developer of the Sudoku app recommended on this site.