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{"difficulty": "easy", "puzzle": [[4, 0, 5, 0, 7, 0, 0, 0, 8], [3, 0, 7, 0, 9, 8, 0, 6, 0], [0, 0, 6, 0, 0, 1, 0, 0, 0], [0, 0, 3, 0, 5, 2, 0, 0, 4], [0, 8, 0, 0, 4, 0, 6, 7, 3], [7, 4, 9, 6, 8, 0, 2, 0, 5], [6, 0, 0, 8, 0, 0, 4, 0, 9], [0, 3, 8, 9, 0, 4, 1, 5, 0], [0, 0, 0, 3, 0, 5, 0, 0, 6]], "solution": [[4, 1, 5, 2, 7, 6, 3, 9, 8], [3, 2, 7, 4, 9, 8, 5, 6, 1], [8, 9, 6, 5, 3, 1, 7, 4, 2], [1, 6, 3, 7, 5, 2, 9, 8, 4], [5, 8, 2, 1, 4, 9, 6, 7, 3], [7, 4, 9, 6, 8, 3, 2, 1, 5], [6, 5, 1, 8, 2, 7, 4, 3, 9], [2, 3, 8, 9, 6, 4, 1, 5, 7], [9, 7, 4, 3, 1, 5, 8, 2, 6]]}
