Hard Level 10 (27 clues)

谜题网址: http://cn.sudoku99.com/sudoku9x9/puzzle/475622/
网站: cn.sudoku99.com

2

7

1

3

6

3

6

4

1

3

4

5

6

2

8

4

1

8

1

6

5

2

8

4

7

7

8