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.

 

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

 

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