Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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