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.

 

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

 

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