Easy Level 6 (31 clues)

谜题网址: http://cn.sudoku99.com/sudoku9x9/puzzle/281862/
网站: cn.sudoku99.com

9

5

8

7

5

2

9

4

1

2

6

1

9

5

4

1

8

6

3

1

2

4

9

8

3

5

6

1

1

8

9