use crate::SodokuMatrix;
/// Sample sodokus
pub const SODOKU: [SodokuMatrix; 50] = [
    [
        [0, 0, 3, 0, 2, 0, 6, 0, 0],
        [9, 0, 0, 3, 0, 5, 0, 0, 1],
        [0, 0, 1, 8, 0, 6, 4, 0, 0],
        [0, 0, 8, 1, 0, 2, 9, 0, 0],
        [7, 0, 0, 0, 0, 0, 0, 0, 8],
        [0, 0, 6, 7, 0, 8, 2, 0, 0],
        [0, 0, 2, 6, 0, 9, 5, 0, 0],
        [8, 0, 0, 2, 0, 3, 0, 0, 9],
        [0, 0, 5, 0, 1, 0, 3, 0, 0],
    ],
    [
        [2, 0, 0, 0, 8, 0, 3, 0, 0],
        [0, 6, 0, 0, 7, 0, 0, 8, 4],
        [0, 3, 0, 5, 0, 0, 2, 0, 9],
        [0, 0, 0, 1, 0, 5, 4, 0, 8],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
        [4, 0, 2, 7, 0, 6, 0, 0, 0],
        [3, 0, 1, 0, 0, 7, 0, 4, 0],
        [7, 2, 0, 0, 4, 0, 0, 6, 0],
        [0, 0, 4, 0, 1, 0, 0, 0, 3],
    ],
    [
        [0, 0, 0, 0, 0, 0, 9, 0, 7],
        [0, 0, 0, 4, 2, 0, 1, 8, 0],
        [0, 0, 0, 7, 0, 5, 0, 2, 6],
        [1, 0, 0, 9, 0, 4, 0, 0, 0],
        [0, 5, 0, 0, 0, 0, 0, 4, 0],
        [0, 0, 0, 5, 0, 7, 0, 0, 9],
        [9, 2, 0, 1, 0, 8, 0, 0, 0],
        [0, 3, 4, 0, 5, 9, 0, 0, 0],
        [5, 0, 7, 0, 0, 0, 0, 0, 0],
    ],
    [
        [0, 3, 0, 0, 5, 0, 0, 4, 0],
        [0, 0, 8, 0, 1, 0, 5, 0, 0],
        [4, 6, 0, 0, 0, 0, 0, 1, 2],
        [0, 7, 0, 5, 0, 2, 0, 8, 0],
        [0, 0, 0, 6, 0, 3, 0, 0, 0],
        [0, 4, 0, 1, 0, 9, 0, 3, 0],
        [2, 5, 0, 0, 0, 0, 0, 9, 8],
        [0, 0, 1, 0, 2, 0, 6, 0, 0],
        [0, 8, 0, 0, 6, 0, 0, 2, 0],
    ],
    [
        [0, 2, 0, 8, 1, 0, 7, 4, 0],
        [7, 0, 0, 0, 0, 3, 1, 0, 0],
        [0, 9, 0, 0, 0, 2, 8, 0, 5],
        [0, 0, 9, 0, 4, 0, 0, 8, 7],
        [4, 0, 0, 2, 0, 8, 0, 0, 3],
        [1, 6, 0, 0, 3, 0, 2, 0, 0],
        [3, 0, 2, 7, 0, 0, 0, 6, 0],
        [0, 0, 5, 6, 0, 0, 0, 0, 8],
        [0, 7, 6, 0, 5, 1, 0, 9, 0],
    ],
    [
        [1, 0, 0, 9, 2, 0, 0, 0, 0],
        [5, 2, 4, 0, 1, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 7, 0],
        [0, 5, 0, 0, 0, 8, 1, 0, 2],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
        [4, 0, 2, 7, 0, 0, 0, 9, 0],
        [0, 6, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 3, 0, 9, 4, 5],
        [0, 0, 0, 0, 7, 1, 0, 0, 6],
    ],
    [
        [0, 4, 3, 0, 8, 0, 2, 5, 0],
        [6, 0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 1, 0, 9, 4],
        [9, 0, 0, 0, 0, 4, 0, 7, 0],
        [0, 0, 0, 6, 0, 8, 0, 0, 0],
        [0, 1, 0, 2, 0, 0, 0, 0, 3],
        [8, 2, 0, 5, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0, 5],
        [0, 3, 4, 0, 9, 0, 7, 1, 0],
    ],
    [
        [4, 8, 0, 0, 0, 6, 9, 0, 2],
        [0, 0, 2, 0, 0, 8, 0, 0, 1],
        [9, 0, 0, 3, 7, 0, 0, 6, 0],
        [8, 4, 0, 0, 1, 0, 2, 0, 0],
        [0, 0, 3, 7, 0, 4, 1, 0, 0],
        [0, 0, 1, 0, 6, 0, 0, 4, 9],
        [0, 2, 0, 0, 8, 5, 0, 0, 7],
        [7, 0, 0, 9, 0, 0, 6, 0, 0],
        [6, 0, 9, 2, 0, 0, 0, 1, 8],
    ],
    [
        [0, 0, 0, 9, 0, 0, 0, 0, 2],
        [0, 5, 0, 1, 2, 3, 4, 0, 0],
        [0, 3, 0, 0, 0, 0, 1, 6, 0],
        [9, 0, 8, 0, 0, 0, 0, 0, 0],
        [0, 7, 0, 0, 0, 0, 0, 9, 0],
        [0, 0, 0, 0, 0, 0, 2, 0, 5],
        [0, 9, 1, 0, 0, 0, 0, 5, 0],
        [0, 0, 7, 4, 3, 9, 0, 2, 0],
        [4, 0, 0, 0, 0, 7, 0, 0, 0],
    ],
    [
        [0, 0, 1, 9, 0, 0, 0, 0, 3],
        [9, 0, 0, 7, 0, 0, 1, 6, 0],
        [0, 3, 0, 0, 0, 5, 0, 0, 7],
        [0, 5, 0, 0, 0, 0, 0, 0, 9],
        [0, 0, 4, 3, 0, 2, 6, 0, 0],
        [2, 0, 0, 0, 0, 0, 0, 7, 0],
        [6, 0, 0, 1, 0, 0, 0, 3, 0],
        [0, 4, 2, 0, 0, 7, 0, 0, 6],
        [5, 0, 0, 0, 0, 6, 8, 0, 0],
    ],
    [
        [0, 0, 0, 1, 2, 5, 4, 0, 0],
        [0, 0, 8, 4, 0, 0, 0, 0, 0],
        [4, 2, 0, 8, 0, 0, 0, 0, 0],
        [0, 3, 0, 0, 0, 0, 0, 9, 5],
        [0, 6, 0, 9, 0, 2, 0, 1, 0],
        [5, 1, 0, 0, 0, 0, 0, 6, 0],
        [0, 0, 0, 0, 0, 3, 0, 4, 9],
        [0, 0, 0, 0, 0, 7, 2, 0, 0],
        [0, 0, 1, 2, 9, 8, 0, 0, 0],
    ],
    [
        [0, 6, 2, 3, 4, 0, 7, 5, 0],
        [1, 0, 0, 0, 0, 5, 6, 0, 0],
        [5, 7, 0, 0, 0, 0, 0, 4, 0],
        [0, 0, 0, 0, 9, 4, 8, 0, 0],
        [4, 0, 0, 0, 0, 0, 0, 0, 6],
        [0, 0, 5, 8, 3, 0, 0, 0, 0],
        [0, 3, 0, 0, 0, 0, 0, 9, 1],
        [0, 0, 6, 4, 0, 0, 0, 0, 7],
        [0, 5, 9, 0, 8, 3, 2, 6, 0],
    ],
    [
        [3, 0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 5, 0, 0, 9, 0, 0, 0],
        [2, 0, 0, 5, 0, 4, 0, 0, 0],
        [0, 2, 0, 0, 0, 0, 7, 0, 0],
        [1, 6, 0, 0, 0, 0, 0, 5, 8],
        [7, 0, 4, 3, 1, 0, 6, 0, 0],
        [0, 0, 0, 8, 9, 0, 1, 0, 0],
        [0, 0, 0, 0, 6, 7, 0, 8, 0],
        [0, 0, 0, 0, 0, 5, 4, 3, 7],
    ],
    [
        [6, 3, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 5, 0, 0, 0, 0, 8],
        [0, 0, 5, 6, 7, 4, 0, 0, 0],
        [0, 0, 0, 0, 2, 0, 0, 0, 0],
        [0, 0, 3, 4, 0, 1, 0, 2, 0],
        [0, 0, 0, 0, 0, 0, 3, 4, 5],
        [0, 0, 0, 0, 0, 7, 0, 0, 4],
        [0, 8, 0, 3, 0, 0, 9, 0, 2],
        [9, 4, 7, 1, 0, 0, 0, 8, 0],
    ],
    [
        [0, 0, 0, 0, 2, 0, 0, 4, 0],
        [0, 0, 8, 0, 3, 5, 0, 0, 0],
        [0, 0, 0, 0, 7, 0, 6, 0, 2],
        [0, 3, 1, 0, 4, 6, 9, 7, 0],
        [2, 0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 5, 0, 1, 2, 0, 3],
        [0, 4, 9, 0, 0, 0, 7, 3, 0],
        [0, 0, 0, 0, 0, 0, 0, 1, 0],
        [8, 0, 0, 0, 0, 4, 0, 0, 0],
    ],
    [
        [3, 6, 1, 0, 2, 5, 9, 0, 0],
        [0, 8, 0, 9, 6, 0, 0, 1, 0],
        [4, 0, 0, 0, 0, 0, 0, 5, 7],
        [0, 0, 8, 0, 0, 0, 4, 7, 1],
        [0, 0, 0, 6, 0, 3, 0, 0, 0],
        [2, 5, 9, 0, 0, 0, 8, 0, 0],
        [7, 4, 0, 0, 0, 0, 0, 0, 5],
        [0, 2, 0, 0, 1, 8, 0, 6, 0],
        [0, 0, 5, 4, 7, 0, 3, 2, 9],
    ],
    [
        [0, 5, 0, 8, 0, 7, 0, 2, 0],
        [6, 0, 0, 0, 1, 0, 0, 9, 0],
        [7, 0, 2, 5, 4, 0, 0, 0, 6],
        [0, 7, 0, 0, 2, 0, 3, 0, 1],
        [5, 0, 4, 0, 0, 0, 9, 0, 8],
        [1, 0, 3, 0, 8, 0, 0, 7, 0],
        [9, 0, 0, 0, 7, 6, 2, 0, 5],
        [0, 6, 0, 0, 9, 0, 0, 0, 3],
        [0, 8, 0, 1, 0, 3, 0, 4, 0],
    ],
    [
        [0, 8, 0, 0, 0, 5, 0, 0, 0],
        [0, 0, 0, 0, 0, 3, 4, 5, 7],
        [0, 0, 0, 0, 7, 0, 8, 0, 9],
        [0, 6, 0, 4, 0, 0, 9, 0, 3],
        [0, 0, 7, 0, 1, 0, 5, 0, 0],
        [4, 0, 8, 0, 0, 7, 0, 2, 0],
        [9, 0, 1, 0, 2, 0, 0, 0, 0],
        [8, 4, 2, 3, 0, 0, 0, 0, 0],
        [0, 0, 0, 1, 0, 0, 0, 8, 0],
    ],
    [
        [0, 0, 3, 5, 0, 2, 9, 0, 0],
        [0, 0, 0, 0, 4, 0, 0, 0, 0],
        [1, 0, 6, 0, 0, 0, 3, 0, 5],
        [9, 0, 0, 2, 5, 1, 0, 0, 8],
        [0, 7, 0, 4, 0, 8, 0, 3, 0],
        [8, 0, 0, 7, 6, 3, 0, 0, 1],
        [3, 0, 8, 0, 0, 0, 1, 0, 4],
        [0, 0, 0, 0, 2, 0, 0, 0, 0],
        [0, 0, 5, 1, 0, 4, 8, 0, 0],
    ],
    [
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 9, 8, 0, 5, 1, 0, 0],
        [0, 5, 1, 9, 0, 7, 4, 2, 0],
        [2, 9, 0, 4, 0, 1, 0, 6, 5],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
        [1, 4, 0, 5, 0, 8, 0, 9, 3],
        [0, 2, 6, 7, 0, 9, 5, 8, 0],
        [0, 0, 5, 1, 0, 3, 6, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
    ],
    [
        [0, 2, 0, 0, 3, 0, 0, 9, 0],
        [0, 0, 0, 9, 0, 7, 0, 0, 0],
        [9, 0, 0, 2, 0, 8, 0, 0, 5],
        [0, 0, 4, 8, 0, 6, 5, 0, 0],
        [6, 0, 7, 0, 0, 0, 2, 0, 8],
        [0, 0, 3, 1, 0, 2, 9, 0, 0],
        [8, 0, 0, 6, 0, 5, 0, 0, 7],
        [0, 0, 0, 3, 0, 9, 0, 0, 0],
        [0, 3, 0, 0, 2, 0, 0, 5, 0],
    ],
    [
        [0, 0, 5, 0, 0, 0, 0, 0, 6],
        [0, 7, 0, 0, 0, 9, 0, 2, 0],
        [0, 0, 0, 5, 0, 0, 1, 0, 7],
        [8, 0, 4, 1, 5, 0, 0, 0, 0],
        [0, 0, 0, 8, 0, 3, 0, 0, 0],
        [0, 0, 0, 0, 9, 2, 8, 0, 5],
        [9, 0, 7, 0, 0, 6, 0, 0, 0],
        [0, 3, 0, 4, 0, 0, 0, 1, 0],
        [2, 0, 0, 0, 0, 0, 6, 0, 0],
    ],
    [
        [0, 4, 0, 0, 0, 0, 0, 5, 0],
        [0, 0, 1, 9, 4, 3, 6, 0, 0],
        [0, 0, 9, 0, 0, 0, 3, 0, 0],
        [6, 0, 0, 0, 5, 0, 0, 0, 2],
        [1, 0, 3, 0, 0, 0, 5, 0, 6],
        [8, 0, 0, 0, 2, 0, 0, 0, 7],
        [0, 0, 5, 0, 0, 0, 2, 0, 0],
        [0, 0, 2, 4, 3, 6, 7, 0, 0],
        [0, 3, 0, 0, 0, 0, 0, 4, 0],
    ],
    [
        [0, 0, 4, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 3, 0, 0, 0, 2],
        [3, 9, 0, 7, 0, 0, 0, 8, 0],
        [4, 0, 0, 0, 0, 9, 0, 0, 1],
        [2, 0, 9, 8, 0, 1, 3, 0, 7],
        [6, 0, 0, 2, 0, 0, 0, 0, 8],
        [0, 1, 0, 0, 0, 8, 0, 5, 3],
        [9, 0, 0, 0, 4, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 8, 0, 0],
    ],
    [
        [3, 6, 0, 0, 2, 0, 0, 8, 9],
        [0, 0, 0, 3, 6, 1, 0, 0, 0],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
        [8, 0, 3, 0, 0, 0, 6, 0, 2],
        [4, 0, 0, 6, 0, 3, 0, 0, 7],
        [6, 0, 7, 0, 0, 0, 1, 0, 8],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
        [0, 0, 0, 4, 1, 8, 0, 0, 0],
        [9, 7, 0, 0, 3, 0, 0, 1, 4],
    ],
    [
        [5, 0, 0, 4, 0, 0, 0, 6, 0],
        [0, 0, 9, 0, 0, 0, 8, 0, 0],
        [6, 4, 0, 0, 2, 0, 0, 0, 0],
        [0, 0, 0, 0, 0, 1, 0, 0, 8],
        [2, 0, 8, 0, 0, 0, 5, 0, 1],
        [7, 0, 0, 5, 0, 0, 0, 0, 0],
        [0, 0, 0, 0, 9, 0, 0, 8, 4],
        [0, 0, 3, 0, 0, 0, 6, 0, 0],
        [0, 6, 0, 0, 0, 3, 0, 0, 2],
    ],
    [
        [0, 0, 7, 2, 5, 6, 4, 0, 0],
        [4, 0, 0, 0, 0, 0, 0, 0, 5],
        [0, 1, 0, 0, 3, 0, 0, 6, 0],
        [0, 0, 0, 5, 0, 8, 0, 0, 0],
        [0, 0, 8, 0, 6, 0, 2, 0, 0],
        [0, 0, 0, 1, 0, 7, 0, 0, 0],
        [0, 3, 0, 0, 7, 0, 0, 9, 0],
        [2, 0, 0, 0, 0, 0, 0, 0, 4],
        [0, 0, 6, 3, 1, 2, 7, 0, 0],
    ],
    [
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
        [0, 7, 9, 0, 5, 0, 1, 8, 0],
        [8, 0, 0, 0, 0, 0, 0, 0, 7],
        [0, 0, 7, 3, 0, 6, 8, 0, 0],
        [4, 5, 0, 7, 0, 8, 0, 9, 6],
        [0, 0, 3, 5, 0, 2, 7, 0, 0],
        [7, 0, 0, 0, 0, 0, 0, 0, 5],
        [0, 1, 6, 0, 3, 0, 4, 2, 0],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
    ],
    [
        [0, 3, 0, 0, 0, 0, 0, 8, 0],
        [0, 0, 9, 0, 0, 0, 5, 0, 0],
        [0, 0, 7, 5, 0, 9, 2, 0, 0],
        [7, 0, 0, 1, 0, 5, 0, 0, 8],
        [0, 2, 0, 0, 9, 0, 0, 3, 0],
        [9, 0, 0, 4, 0, 2, 0, 0, 1],
        [0, 0, 4, 2, 0, 7, 1, 0, 0],
        [0, 0, 2, 0, 0, 0, 8, 0, 0],
        [0, 7, 0, 0, 0, 0, 0, 9, 0],
    ],
    [
        [2, 0, 0, 1, 7, 0, 6, 0, 3],
        [0, 5, 0, 0, 0, 0, 1, 0, 0],
        [0, 0, 0, 0, 0, 6, 0, 7, 9],
        [0, 0, 0, 0, 4, 0, 7, 0, 0],
        [0, 0, 0, 8, 0, 1, 0, 0, 0],
        [0, 0, 9, 0, 5, 0, 0, 0, 0],
        [3, 1, 0, 4, 0, 0, 0, 0, 0],
        [0, 0, 5, 0, 0, 0, 0, 6, 0],
        [9, 0, 6, 0, 3, 7, 0, 0, 2],
    ],
    [
        [0, 0, 0, 0, 0, 0, 0, 8, 0],
        [8, 0, 0, 7, 0, 1, 0, 4, 0],
        [0, 4, 0, 0, 2, 0, 0, 3, 0],
        [3, 7, 4, 0, 0, 0, 9, 0, 0],
        [0, 0, 0, 0, 3, 0, 0, 0, 0],
        [0, 0, 5, 0, 0, 0, 3, 2, 1],
        [0, 1, 0, 0, 6, 0, 0, 5, 0],
        [0, 5, 0, 8, 0, 2, 0, 0, 6],
        [0, 8, 0, 0, 0, 0, 0, 0, 0],
    ],
    [
        [0, 0, 0, 0, 0, 0, 0, 8, 5],
        [0, 0, 0, 2, 1, 0, 0, 0, 9],
        [9, 6, 0, 0, 8, 0, 1, 0, 0],
        [5, 0, 0, 8, 0, 0, 0, 1, 6],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
        [8, 9, 0, 0, 0, 6, 0, 0, 7],
        [0, 0, 9, 0, 7, 0, 0, 5, 2],
        [3, 0, 0, 0, 5, 4, 0, 0, 0],
        [4, 8, 0, 0, 0, 0, 0, 0, 0],
    ],
    [
        [6, 0, 8, 0, 7, 0, 5, 0, 2],
        [0, 5, 0, 6, 0, 8, 0, 7, 0],
        [0, 0, 2, 0, 0, 0, 3, 0, 0],
        [5, 0, 0, 0, 9, 0, 0, 0, 6],
        [0, 4, 0, 3, 0, 2, 0, 5, 0],
        [8, 0, 0, 0, 5, 0, 0, 0, 3],
        [0, 0, 5, 0, 0, 0, 2, 0, 0],
        [0, 1, 0, 7, 0, 4, 0, 9, 0],
        [4, 0, 9, 0, 6, 0, 7, 0, 1],
    ],
    [
        [0, 5, 0, 0, 1, 0, 0, 4, 0],
        [1, 0, 7, 0, 0, 0, 6, 0, 2],
        [0, 0, 0, 9, 0, 5, 0, 0, 0],
        [2, 0, 8, 0, 3, 0, 5, 0, 1],
        [0, 4, 0, 0, 7, 0, 0, 2, 0],
        [9, 0, 1, 0, 8, 0, 4, 0, 6],
        [0, 0, 0, 4, 0, 1, 0, 0, 0],
        [3, 0, 4, 0, 0, 0, 7, 0, 9],
        [0, 2, 0, 0, 6, 0, 0, 1, 0],
    ],
    [
        [0, 5, 3, 0, 0, 0, 7, 9, 0],
        [0, 0, 9, 7, 5, 3, 4, 0, 0],
        [1, 0, 0, 0, 0, 0, 0, 0, 2],
        [0, 9, 0, 0, 8, 0, 0, 1, 0],
        [0, 0, 0, 9, 0, 7, 0, 0, 0],
        [0, 8, 0, 0, 3, 0, 0, 7, 0],
        [5, 0, 0, 0, 0, 0, 0, 0, 3],
        [0, 0, 7, 6, 4, 1, 2, 0, 0],
        [0, 6, 1, 0, 0, 0, 9, 4, 0],
    ],
    [
        [0, 0, 6, 0, 8, 0, 3, 0, 0],
        [0, 4, 9, 0, 7, 0, 2, 5, 0],
        [0, 0, 0, 4, 0, 5, 0, 0, 0],
        [6, 0, 0, 3, 1, 7, 0, 0, 4],
        [0, 0, 7, 0, 0, 0, 8, 0, 0],
        [1, 0, 0, 8, 2, 6, 0, 0, 9],
        [0, 0, 0, 7, 0, 2, 0, 0, 0],
        [0, 7, 5, 0, 4, 0, 1, 9, 0],
        [0, 0, 3, 0, 9, 0, 6, 0, 0],
    ],
    [
        [0, 0, 5, 0, 8, 0, 7, 0, 0],
        [7, 0, 0, 2, 0, 4, 0, 0, 5],
        [3, 2, 0, 0, 0, 0, 0, 8, 4],
        [0, 6, 0, 1, 0, 5, 0, 4, 0],
        [0, 0, 8, 0, 0, 0, 5, 0, 0],
        [0, 7, 0, 8, 0, 3, 0, 1, 0],
        [4, 5, 0, 0, 0, 0, 0, 9, 1],
        [6, 0, 0, 5, 0, 8, 0, 0, 7],
        [0, 0, 3, 0, 1, 0, 6, 0, 0],
    ],
    [
        [0, 0, 0, 9, 0, 0, 8, 0, 0],
        [1, 2, 8, 0, 0, 6, 4, 0, 0],
        [0, 7, 0, 8, 0, 0, 0, 6, 0],
        [8, 0, 0, 4, 3, 0, 0, 0, 7],
        [5, 0, 0, 0, 0, 0, 0, 0, 9],
        [6, 0, 0, 0, 7, 9, 0, 0, 8],
        [0, 9, 0, 0, 0, 4, 0, 1, 0],
        [0, 0, 3, 6, 0, 0, 2, 8, 4],
        [0, 0, 1, 0, 0, 7, 0, 0, 0],
    ],
    [
        [0, 0, 0, 0, 8, 0, 0, 0, 0],
        [2, 7, 0, 0, 0, 0, 0, 5, 4],
        [0, 9, 5, 0, 0, 0, 8, 1, 0],
        [0, 0, 9, 8, 0, 6, 4, 0, 0],
        [0, 2, 0, 4, 0, 3, 0, 6, 0],
        [0, 0, 6, 9, 0, 5, 1, 0, 0],
        [0, 1, 7, 0, 0, 0, 6, 2, 0],
        [4, 6, 0, 0, 0, 0, 0, 3, 8],
        [0, 0, 0, 0, 9, 0, 0, 0, 0],
    ],
    [
        [0, 0, 0, 6, 0, 2, 0, 0, 0],
        [4, 0, 0, 0, 5, 0, 0, 0, 1],
        [0, 8, 5, 0, 1, 0, 6, 2, 0],
        [0, 3, 8, 2, 0, 6, 7, 1, 0],
        [0, 0, 0, 0, 0, 0, 0, 0, 0],
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        [0, 0, 0, 0, 0, 0, 2, 0, 5],
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        [0, 0, 1, 0, 7, 0, 5, 0, 0],
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        [0, 2, 7, 0, 3, 0, 5, 1, 0],
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        [0, 5, 0, 0, 0, 0, 0, 8, 0],
        [0, 0, 4, 0, 7, 0, 1, 0, 0],
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        [0, 0, 0, 0, 0, 8, 0, 0, 6],
    ],
];