Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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