Medium Level 8 (29 clues)

谜题网址: http://cn.sudoku99.com/sudoku9x9/puzzle/194565/
网站: cn.sudoku99.com

6

2

1

1

9

6

7

3

8

9

5

1

6

4

6

7

5

2

1

2

8

7

5

4

8

1

2

9

6