Langer's Sudoku Assistant

Invalid Sudoku!

Row 4 is invalid. Column 9 is invalid. The top right 3x3 Box is invalid. Go back and make a different choice.

 

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

 

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