Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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