Medium Level 8 (29 clues)

谜题网址: http://cn.sudoku99.com/sudoku9x9/puzzle/740498/
网站: cn.sudoku99.com

8

2

7

4

5

5

3

8

4

6

7

1

3

7

8

4

5

5

4

7

6

4

1

2

8

5

1

3

1