Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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