Langer's Sudoku Assistant

Invalid Sudoku!

Row 8 is invalid. Column 5 is invalid. The bottom center 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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