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