Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 7 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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