Langer's Sudoku Assistant

Invalid Sudoku!

Row 9 is invalid. Column 8 is invalid. The bottom right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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