sudoku_run_episode.py

def run_episode(grid_dict):
    stuck = False
    while not stuck:
        # Check how many boxes have a fixed value
        solved_values_before = len([box for box in grid_dict.keys() if len(grid_dict[box]) == 1])
        
        # Use the Eliminate Strategy
        grid_dict = eliminate(grid_dict)
        
        # Use the Only Choice Strategy
        grid_dict = only_choice(grid_dict)
        
        # Check how many boxes have a fixed value now
        solved_values_after = len([box for box in grid_dict.keys() if len(grid_dict[box]) == 1])
        
        # If there is no change, stop the loop.
        stuck = solved_values_before == solved_values_after
        
        
        # if the current sudoku configuration is un-solvable then return False
        if len([box for box in grid_dict.keys() if len(grid_dict[box]) == 0]):
            return False 
    return grid_dict