For instance, consider the figure above. The number 7 has been solved in 8 boxes and is only missing one instance. The missing 7 can only go into R8C8.
Sudoku strategy - Singles(Last Digit)
Last digit happens when there is only one instance of a number missing from the whole grid and the missing instance has only one cell to go to.
For instance, consider the figure above. The number 7 has been solved in 8 boxes and is only missing one instance. The missing 7 can only go into R8C8.
For instance, consider the figure above. The number 7 has been solved in 8 boxes and is only missing one instance. The missing 7 can only go into R8C8.