Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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