0:00
{"difficulty": "hard", "puzzle": [[2, 3, 8, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 7, 0], [0, 0, 9, 4, 0, 0, 1, 0, 0], [0, 5, 0, 0, 9, 0, 0, 3, 0], [0, 0, 0, 7, 1, 0, 0, 0, 0], [6, 1, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 5, 0, 4, 2, 0, 0], [8, 0, 0, 0, 0, 0, 6, 0, 0], [0, 0, 0, 0, 0, 3, 4, 9, 0]], "solution": [[2, 3, 8, 6, 7, 1, 9, 5, 4], [1, 6, 4, 2, 5, 9, 3, 7, 8], [5, 7, 9, 4, 3, 8, 1, 6, 2], [4, 5, 2, 8, 9, 6, 7, 3, 1], [9, 8, 3, 7, 1, 2, 5, 4, 6], [6, 1, 7, 3, 4, 5, 8, 2, 9], [3, 9, 1, 5, 6, 4, 2, 8, 7], [8, 4, 5, 9, 2, 7, 6, 1, 3], [7, 2, 6, 1, 8, 3, 4, 9, 5]]}
