Langer's Sudoku Assistant

Invalid Sudoku!

Row 5 is invalid. Column 9 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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