Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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