Langer's Sudoku Assistant

Invalid Sudoku!

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

 

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

 

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