Langer's Sudoku Assistant

Invalid Sudoku!

Row 7 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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