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zahash/sudoku_only_choice.py

Created January 5, 2019 07:01
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sudoku_only_choice.py
def only_choice(grid_dict):
for unit in unit_list:
for num in '123456789':
num_places = [box for box in unit if num in grid_dict[box]]
if len(num_places) == 1:
grid_dict[num_places[0]] = num
return grid_dict
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