Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 4 is invalid. The middle center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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