Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

3
9
1
7
   2   
   5   
       
6
4
   2   
   5   
       
8
7
6
4
1
1
8
9
3
5
8
   2   
   5   
       
   2   
   5   
       
3
9
4
6
1
7
2
4
7
5
1
3
8
6
9
8
9
1
6
4
2
5
7
3
5
3
6
7
8
9
2
4
1
6
3
5
9
8
2
1
7
4
4
2
9
3
1
7
1
8
6
1
7
8
4
6
5
9
2
3

 

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