Please read me first!
Medium Sudoku.
0, 0, 3 0, 1, 4 0, 5, 5 0, 8, 2 1, 0, 7 1, 1, 9 1, 3, 4 1, 4, 2 1, 7, 3 1, 8, 5 2, 0, 1 2, 1, 2 2, 8, 4 3, 0, 4 3, 1, 1 3, 2, 2 3, 4, 8 3, 5, 9 3, 6, 5 3, 8, 3 4, 0, 6 4, 1, 8 4, 2, 7 4, 3, 2 4, 6, 9 5, 0, 9 5, 4, 4 5, 6, 8 6, 0, 2 6, 1, 3 6, 3, 8 6, 5, 6 6, 6, 4 7, 1, 6 7, 5, 4 8, 4, 9