for num in range(10):
# this will cause it to iterate through the sectors in the grid
for sector_id in range(9):
# setting the number of flagged/possible spots to 0
sudoku.flagged_spots = 0
# the massive if statements that looks at a box in the puzzle to
# determine if those things are all true.
for number_in_block, row, col in sudoku.iter_sector(sector_id):
if (sudoku.current_box_is_blank(row, col)
and sudoku.num_is_not_in_sector(row, col, num)
and sudoku.num_is_not_in_row(row, col, num)
and sudoku.num_is_not_in_col(row, col, num)):
# if all are true, it flags that spot as a possible
# solution, and records it.
sudoku.flagged_spots += 1
sudoku.flag_num = num
sudoku.flag_row = row
sudoku.flag_col = col
number_that_was_in_block = number_in_block
# print("I'm flagging {},{}, for number: {} which is in sector {}, and this is the {} flag.".format(row,col,num,sector_id,sudoku.flagged_spots))
# prior to going to the next number, if only one flag has been
# created in the section, the spot must be good, so it updates the
# table.
if sudoku.flagged_spots == 1:
sudoku.table[
sudoku.flag_row][
sudoku.flag_col] = sudoku.flag_num
print("Putting {} in sector {} at {} row {} col.".format(
num, sector_id + 1, sudoku.flag_row + 1, sudoku.flag_col + 1))
counter += 1
