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.

 

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

 

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