Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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