Medium Level 8 (29 clues)

谜题网址: http://cn.sudoku99.com/sudoku9x9/puzzle/936711/
网站: cn.sudoku99.com

6

1

7

5

9

8

1

6

5

7

4

6

3

8

2

6

2

5

1

4

9

2

2

5

1

1

9

7

6