Picture_Puzzle/main_stats.json

{
    "stats": {
        "overall_time": 0,
        "overall_moves": 0,
        "overall_completed": 0,
        "not_completed": 0,
        "quickest_puzzle_time": [null, 0],
        "quickest_puzzle_moves": [null, 0],
        "longest_puzzle_time": [null, 0],
        "longest_puzzle_moves": [null, 0]
    }
}