We remain with a number 9 and now search the other blocks for a unique solution. Following the same approach used above, there is a further field in which only the number 9 can stand. Using this approach, the entire Sudoku can be solved.
We remain with a number 9 and now search the other blocks for a unique solution. Following the same approach used above, there is a further field in which only the number 9 can stand. Using this approach, the entire Sudoku can be solved.