Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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