Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 1 is invalid. The middle left 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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