Medium Level 8 (29 clues)

谜题网址: http://cn.sudoku99.com/sudoku9x9/puzzle/920329/
网站: cn.sudoku99.com

7

4

2

5

6

8

3

5

1

3

5

8

6

7

4

2

3

1

9

2

8

1

8

3

4

9

6

4

7