Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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