Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 4 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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