text: const sample_arr = [
    [9, 0, 0, 6, 0, 0, 0, 2, 0],
    [0, 0, 5, 0, 0, 0, 3, 0, 1],
    [0, 6, 0, 0, 0, 5, 0, 8, 0],
    [3, 0, 0, 0, 9, 0, 2, 0, 6],
    [0, 8, 0, 1, 0, 2, 0, 9, 0],
    [7, 0, 9, 0, 5, 0, 0, 0, 4],
    [0, 7, 0, 5, 0, 0, 0, 3, 0],
    [6, 0, 3, 0, 0, 0, 1, 0, 0],
    [0, 5, 0, 0, 0, 3, 0, 0, 2],
  ];
  
  function generate() {
    return sample_arr;
  }
  
  module.exports = { generate };
  