Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 8 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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