Langer's Sudoku Assistant

Invalid Sudoku!

Row 6 is invalid. Column 7 is invalid. The middle right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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