< Back

Last Possible Cell

A simple strategy to find the cell where a number must go because it has only one possible place left in the unit.

  1. Have a look at this block. Do you see the only cell that can contain the number ‘8’?
Last possible cell initial Sudoku grid example
  1. As you can see, number 8 can not be placed anywhere in the block except the highlighted cell.
Last possible cell technique applied to a Sudoku grid
  1. Have a look at another example. Here you can see that number 9 can’t be placed anywhere inside the row except the highlighted cell.
Last possible cell in rows and columns example

< Last Remaining Number

Naked Single >