Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 6 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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